免费梯子app 免费科学上网电脑

I'm going to talk about this issue

Many scientific ways to get online

The relatively best one is the "intranet line"

Which is what you often say

"IPLC" and "IEPL" lines

Then I will tell you

Some things that few people in the industry know about in the intranet airport

This issue must be watched carefully

What I'm talking about are things that non-industry people rarely mention

Very valuable to you

Figured out what I'm talking about in this issue

Will directly help you judge the quality of the intranet airport

Advantages and disadvantages of intranet lines, etc.

Besides

I will help you crack some

Some rumors about intranet lines

Or misinformation

First be clear

What I’m going to talk about next is the general situation

If what I said and what you know

Or the actual situation does not meet

Please understand

May be your case

Not a common situation

I just talked about going online scientifically

Did not say the word over the wall

The reason is

In fact, the intranet line is not strictly speaking over the wall

Because of the intranet line

Not subject to GFW review

Which is what you often say

IPLC and IEPL are not on the wall

the reason is simple

Intranet demand

Generally some large multinational companies or organizations

They proposed

Their hard requirements are stability, low latency and the best reliability

So the public network used by ordinary users

Naturally can't satisfy them

The largest customers of intranet lines are also these institutions

Especially large multinational companies in banking and financial transactions

You think about these customers

How could it be like us ordinary netizens

Accept data packets to jump dozens or hundreds of times

And then risk the data packet loss in the vast ocean of the public network

So it's natural

They have intranet needs

International dedicated lines save a lot of jumps and forwarding

Maximum degree of reliability and stability

Dedicated intranet line

Naturally, it is not subject to public Internet and international export inspections

That is, what you said is not a wall

About IPLC "International Private Leased Circuit"

And IEPL "International Ethernet Private Line"

Specific underlying principles

I won't elaborate

Few people need to know these things

But a few points

I can briefly mention

First IPLC and IEPL

Are all intranet lines

The so-called intranet refers to the transmission of data through the internal network

Do not go to the public network

Combined with what I said in the seventh issue

OSI model IPLC is through the physical layer

Local area network formed by connecting two points to each other

IEPL connects point-to-point or multipoint-to-multipoint connections through the data link layer

Whether it is IPLC or IEPL itself

In fact, the group is all intranet

Want to connect to the Internet through the intranet

Still need an extra step

Is to forward the data to the public network

Let me give an example

For example, I am in Guangdong

Then connect to you in Hong Kong through IPLC

Between us is the IPLC intranet line

Data can be exchanged between us

But none of us can access the public internet

Can't see youtube

I can't use WeChat

To put it bluntly, whether it is IPLC or IEPL

Are just circuits responsible for sending data

Does not have the ability to access the Internet

Intranet

Just connect two points

Want to access both ends of the public network IPLC

Still need to connect to the local computer room

Reconnect to the internet

I'm going to mention one here

The concept of global IPLC

The so-called global refers to your data package

Directly enter the intranet dedicated line

Without skipping

Directly transmitted to the outlet of the dedicated line

But we use the dedicated intranet line through the airport

The actual situation is not IPLC global

But through your local network

Cell network

Then connect to the internet

Then connect to the IPLC transit node

Only entered the dedicated line at this time

Then the data is sent to the external transit node of the intranet

It's no longer a dedicated line at this time

Then access the public network to access the services you need

So-called intranet dedicated line

It's actually just a short section in the middle

IPLC is a pure physical layer transmission circuit

The technical realization is through "TDM"

Which is "Time Division Multiplexing"

Data transmission realized by "time division multiplexing"

Very low time difference through

To distinguish different users and business data

Essentially needs to rely on a router

IEPL is a pure Ethernet circuit

Communication through MAC address between devices

A layer of routing equipment is missing

Compared with IPLC, the delay can be lower

By TDM, also known as "Time Division Multiplexing"

The resulting jitter will also be reduced

But the difference between these two is not very big

Basically negligible

I'll talk about it as one thing later

Which services are carried on these transmission circuits

Those layers above include the network layer

The transport layer session applies these layers of things

In the OSI model

IPLC is the circuit of the first physical layer

IEPL is the link layer circuits are just circuits

It has nothing to do with the Internet and the public network

Speak more bluntly

For example, this network cable

You can understand it as a dedicated line

But the network cable itself

If there is no optical cat

No internet access

The two ends connected are the LAN

This is the so-called intranet

There are several main advantages of the intranet

The first one is low latency

The second is high stability and reliability

The third is not to be censored

How is low latency achieved?

It's very simple that there is no extra jump

This is actually easy to understand

This network cable connects to two points

How do you jump in the middle of your data transmission, right?

No jump

In the public network environment

For example, we visit a website

Data within a few milliseconds to tens of milliseconds

Through the cell network

Parsed by the local server

Departure from Guangdong to Hong Kong to enter the dedicated data packet

Before entering the dedicated line

It may be sent dozens of times after the jump

Although the intranet line says there is no way to save you

At the beginning, the local server in this segment of the community network parsed the delay of these things

But when crossing the border

You can understand it as almost zero bounce

This is much stronger than many 163 and CN2 lines

CN2 line from Shanghai to Japan

The delay is around 40 milliseconds

But the Shanghai-Japan IPLC dedicated line

The lowest delay can be 25 milliseconds

Shenzhen and Hong Kong can achieve 5 milliseconds

120 milliseconds from Shanghai to West America

Shenzhen to Singapore 45 milliseconds

The next advantage is stability and reliability

This is also easy to understand

Few people use dedicated lines

Not affected by the public network

Naturally high stability and reliability

You need to know

The general dedicated line is the data center of a multinational company who is using bank securities to trade

And CDN content distribution services

Can satisfy their stability and reliability

Not to mention to you, right

The last advantage is

Just what we used

Not censored

Intranet lines need to be reviewed

It is difficult to become a dedicated internal network cable in the true sense.

The other is because the relative cost is relatively high

In addition, the qualification requirements are relatively high

And the main users

Are used by some large multinational companies

It is difficult to have specific policies implemented

It's like someone rented your house

Even if you are the landlord

I can't just go into the house without saying hello, right?

So it happens to be

Used by us to use the Internet scientifically

Let me focus on the shortcomings below

That's the price

Here you pay attention

I say that price is a disadvantage, not expensive

But the price you can buy

It depends on who you buy

For example, if you can buy a dedicated line from the source of China Unicom

The price may be much cheaper than CN2, right?

But you are not qualified

So can't buy

So you can hardly buy it from upstream

Generally can only be bought through the following distributors

After the dealer has passed a few levels

Although there is no such strict qualification requirement

Even arrived at the airport

For example, the airport sells intranet lines for ordinary users like you and me to use

No need to look at your qualifications

But the price is much higher

But even if it is expensive

It's just relative

How much is the specific IPLC

There is no way to quote

You need to present your specific needs to the operator

Type of data carried and service bandwidth

Then the operator will give you a quote

In addition, it also depends on the physical distance

Is it a submarine cable or a terrestrial cable

Laying cost etc.

For example, the land optical cable dedicated line of Shenzhen and Hong Kong

While laying

The cost is naturally the same as the submarine optical cable from Shanghai to the US West

Submarine Optical Cable from Shanghai and Japan

The cost is not an order of magnitude at all

So the price will be much worse

I'll show you

This picture is the price of Unicom's Shanghai to Hong Kong intranet dedicated line

You can see the bandwidth of 1.5M and 2M

It’s 20,000 to 20,000 per month, respectively.

This picture shows China Unicom from Shanghai to Los Angeles, USA

That is the price of the US West special line

You can see 1.5 megabytes and 2 megabytes

The prices are 110,000 and 110,000 5

The same is the intranet dedicated line

One takes the terrestrial fiber optic cable

One is taking the submarine optical cable

And the distance is much worse

The price can be as low as 5 times

In addition to physical distance

Because it is rented

How much bandwidth do you rent

Also directly determine the price

So I can only tell you

Different dedicated lines of IPLC

The price is completely different

Shenzhen, Hong Kong and Shanghai and the United States are completely two orders of magnitude prices

I'm here to dispel the rumors exclusively for you

Those on the Internet that say IPLC is expensive or IPLC is cheap

May be all right or all may be wrong

There is also a tricky

It means you see who you are looking for to buy

For example, China Telecom and China Unicom’s own international dedicated lines

I usually find a secondary distributor

Secondary distributors will also find their distributors

The more you go down, the more expensive

But the more you go up, the more difficult it is

The higher the qualification required

It depends on the person

If you can buy it directly from Telecom

It must be direct sales at the factory price

So I always said

Let you suggest pick some big airports

This is the truth to a certain extent

Many IDC data centers and large airports

Does have some qualifications higher than others

Can buy lines directly from secondary dealers or directly from China Telecom Unicom

Naturally cheaper

Naturally, the less he will be kidnapped by the upstream

When I tell you about the airport

Tell you in detail

Except for price differences caused by distributors

There are also many solutions for IPLC itself

The same, for example, the Shenzhen-Hong Kong line may have multiple plans

The delay may be slightly different

But it will be directly reflected in the price

There is also the true and false IPLC that you often pass on

There is also said that Ali’s IPLC is not a real IPLC

Let’s not say that Ali puts multiple data centers

Does it count as IPLC if it is connected through the intranet?

Export traffic, but the wall can't deceive people, right?

I don’t really need to worry about this

It doesn't matter whether it is true or not

IPLC is just such a small piece of transit data.

What you really should care about

It is still the two segments before access to the dedicated line and the public network outside the country

Anyway, crossing the wall without review is IPLC

It’s the biggest feature for us

Time delay and stability are relatively ethereal to us

Unless you live at the entrance of IPLC

Your data package can be directly connected to IPLC to realize global IPLC

For 免费科学上网安卓 [https://mytizi.eleoem.com] example, I am in Guangdong

Use Ali's intranet

Or use the airport's IPLC dedicated line

I went to Shenzhen and Hong Kong IPLC, the experience is actually not much difference

But if you are in the northeast

The data packets you access to the Shenzhen-Hong Kong line are forwarded dozens of times

It took tens of thousands of kilometers to access the Shenzhen-Hong Kong special line

If you take the Shenzhen-Hong Kong special line, you may leave the country after walking tens of kilometers

Which section do you think is more important

to be honest

For those of us who circumvent the wall in the mainland,

But the wall is the most important

No need to consider so much stability and reliability

These factors are not unimportant

But for those of us who use the Internet scientifically

The advantages of these intranets are only reflected in the transit period.

The biggest significance of IPLC to us is that the exit method is stable and reliable

Don't worry about which day, for example, shadowsocks or V2ray encryption is unreliable

You can't use it, you can't climb the wall, right

In theory, you can always use IPLC to access overseas services

Unless there is a war

Or the submarine fiber optic cable or the terrestrial fiber optic cable out of obstacles

In addition, I will tell you a little knowledge

Upstream suppliers are billed through bandwidth for selling lines

Only downstream or restricted by upstream

Will be billed according to traffic

This kind of restriction probably means that their lines are not of good quality

May have turned hands many times

Note that what I am talking about here is that the line provider does not mean the airport

It is very normal and necessary for airports to charge by traffic

Here I will solve a myth for you

That is, many people blindly think that the intranet lines IPLC and IEPL are awesome

Then I feel that the intranet line is air every second every second

Semantically correct, intranet lines are cattle

But do you remember the example I gave you just now

I take this network cable

This is the intranet line

I say this network cable is invincible

But what about your cat, what about your router, what about your network card, and what about your export bandwidth?

These other hardware devices and indicators

On the matter of scientific Internet

Although the intranet line is said to be bull

But it is also limited to access to the computer room

This section of the public network connecting the internal network to the Internet

There is also the bearer operation and maintenance of the internal network itself

There are also questions about whether the load balance of the airport is oversold

I will tell you one by one

This section of the IPLC intranet you used for cross-border is no problem

But this paragraph before you connect to IPLC

It may be BGP in most cases

If this paragraph is not well done

Packet loss congestion QoS

You have a delay of more than 500 milliseconds before connecting to IPLC

Then your IPLC has a delay of one millisecond and no packet loss at all. 1G bandwidth

Isn't that important anymore

Because no matter how good this intranet is

Your experience will be terrible

This is the barrel effect I used to talk about before

This is the important point that distinguishes the airport from being good or bad.

Is the airport technically capable

Can optimize the channel before sending their customer’s data to the intranet line

IPLC export section access to overseas network services

This end is the same as the entry end before entering the intranet

Is also facing a bunch of optimization problems

And this paragraph is overseas, right

Unfamiliar places in life are often more complicated

So set up an intranet

Except for the room at both ends

Access to the local public network is also a technical threshold

Finished talking on both ends

Let’s just talk about the intranet line itself

Even in the internal network line, there are a lot of troubles

Here I will talk to you about some of the things behind the operation of the airport

Very valuable, listen carefully

For example, there is an airport

Bought 10 private lines of upstream IPLC

One line is 100,000 yuan a month

That one month's cost is 1 million, right?

The airport has to be resold to 1,000 customers like you

Without profit

Let these 1000 customers share these 10 lines

It’s 1,000 yuan per person, right?

1000×1000=1 million

At this time, the airport has to build its own server

To dynamically allocate your 1,000 customers

How to allocate these 10 intranet lines

Surely you can't let everyone access one line at the same time, right?

Even the IPLC will be heavily congested and cause the line to blow up

Load balancing needs to be done at this time

For example, a certain line will be disconnected when the load is high

Let others use other lines

That's why sometimes

Others can use a certain line, you can't use it

It's probably because he is already using this line

And you exceeded the threshold when you connected

Show Ping is not working

You can only choose other routes

If you don’t understand the principle at this time

You will go online and say that a certain airport exploded and it was difficult for a thief

Then the airport host will not be angry with you and will not accept your refund

Because you don’t understand and you don’t understand

Besides

When the airport is doing its own load service

It is also necessary to invest in the cost of technicians in the computer room.

This is the so-called operation and maintenance

Continue back to the airport

Didn’t the airport say that it sold 1,000 to customers like you?

Later, the airport found the cost of 1 million

Sold to you 1,000 people

1,000 yuan per person

It just flattened the cost of purchasing the route

Did not make a penny

Plus the operations and personnel of the airport itself

If there is no profit, even if you don’t say that you have to pay back

At this time the airport decided

If you continue to sell only 1,000 people

I'm afraid I will lose even my panties

So I can only sell 1,000 more people

In this way, the airport has 2000 users, right?

At the same time, the cost is eliminated

With an additional profit of 1 million

Use these profits to pay employees and make profits

But found that there are now 2000 users

The line cannot carry so much data

So it will limit everyone's traffic

For example, one person a month will restrict you to 1T of traffic

After doing it for a month

I found that it didn't work or I couldn't carry it

So let everyone only have 500G of traffic

Found it can carry it

And there is redundancy

So I made some small functions that log in and give extra traffic randomly.

Or to open this kind of recommendation code like "Affiliate"

Let you help them to promote

Or optimize these mechanisms for your own load balancing

Find ways to get 2000 users

Diversion of the time and route used

Avoid peak congestion

Or expand the capacity and buy more lines

At this time, it depends on the technology and operation and maintenance capabilities of the airport.

Some airports also cost 1 million

May be able to ensure smooth user experience for 3000 customers

Some airports may not be technically capable

In other words, the operation and maintenance of load balancing cannot be done

1,000 customers may not do well

Then these airports are slowly being eliminated

There are some situations

For example, the same 3000 users

Some airports purchase lines from upstream dealers

The price you get is cheap, right?

Some airports cannot get high-level dealer lines

Will result in a big difference in fees

Some airports may be due to technical problems

Or the problem of operation and maintenance capabilities

Or the problem that the upstream purchase price has no advantage

If there is no competitiveness, you can only oversold and oversold.

Not all airports

All want to destroy the user experience and oversold to make money

But you also have to fully understand the points I just said

Increase the number of lines by 10 times

Then add 10 times the customer and combine all the factors I just mentioned

Combine it together in various situations, right?

You can imagine how much difference there can be in actual use

So the reason why the big airport can be bigger

Basically have real technology

In other words, you can get a relatively low-cost line rental price

There are occasional runaways in small airports

You can understand it

Can't make money and not even a big airport

You can only close the door, right

Just said so much

In fact, it is to show that it is not invincible that the internal network line

A congested intranet line

Coupled with the poor technical ability to deal with the load

May not be as good as CN2

Or 163 backbone network

It may not be as good as your own VPS line.

So please don’t blindly believe in the so-called intranet airport

You have to make specific judgments

I'll share a situation for you

Judge the truth for yourself

I just said to share with you what I heard

I was also an ordinary circumvention user before

No one knows

But in the past few months

Because you guys are very supportive

Help me get the channel size up

So now I am fortunate enough to meet some people inside the airport

The bosses of two big airports talked to me privately

Intranet lines are sold to individual users like us

Even if the charge is several hundred a year

You think expensive

But the airport is often not profitable

May have to post money back

The profit of some intranet airports lies in the

Which is To B

Personal business can only be said to maintain the cost

In other words, the profit is very low

Just for word of mouth and popularity

Then after the word-of-mouth popularity is up

We still have to rely on To B’s business to make money

When I first heard a boss say this

I still don't believe it

Later another airport boss told me the same

Also showed me some prices of some internal procurement lines

I was a little shaken

May indeed be the case

Some of you may ask

Why are there so many big airports

Don't you make money?

This brings me back to the questions I mentioned earlier, right?

There are many customers who have the technical ability to load well

In other words, the price of the line purchased upstream has an advantage and is cheap

May still earn

May even make a lot of money

But not all airports

All have the ability to buy cheap and high-quality lines

Some may indeed only be maintained

Some may indeed pay for a month

In fact, what kind of business is like this, this is easy to understand

In fact, many airports rely on corporate business

Or other businesses make money

So we as individual users

Stop complaining so much

The cost of the intranet dedicated line is really high

Pay attention to the situations I just mentioned

It's all about the intranet airport

Other ordinary airports may also have parts that you can bring in

But what I just talked about was the intranet airport

What i learned

Since I mentioned the line supplier just now

Then I'll talk more

I use the IPLC of Hanamaki Technology myself

This is not a pinch, let me emphasize it again

Hanamaki doesn't make the airport by herself

They are regarded as a dedicated line dealer

Are they directly connected to telecommunications

I'm not sure about the leased line bought directly from Telecom

But look at the price and service

I think Hanamaki is not bad

Some airports and data centers

Because of qualification issues

May not be able to directly connect to top providers like Telecom

They can only buy Hanamaki or other

Tier 2 suppliers like Hanamaki

Buy lines from them

Some went to the airport after buying the line

Some of these lines that bought Hanamaki

Be a downstream distributor of the downstream route

There is a big airport

According to people familiar with the industry

The boss of the airport and the boss of Hanamaki

Is a good friend relationship

Therefore, the price of Hanamaki's line sold to this airport is relatively low

Then this airport does better

Because of this hard advantage

In a state of crushing other opponents in peer competition

So I don’t care much about customer service and my reputation

Then I was also a user of this airport

Use Hanamaki's IPLC line through this airport

But then something happened

I won't use it anymore

Because their customer service treats himself as an uncle

Treat our customers as grandchildren

Then i feel

I think there is an advantage

Can't be so waved, right

Otherwise, it would be ugly to be counter-killed

The information I just mentioned

It's all just i want to share with you

I know only the information

In fact

No matter what I said about Hanamaki's special line

It is also the private line of the top provider of telecommunications

Changed hands several times

Is the load balancing and operation and maintenance of each company oversold?

In fact, they are all part of the barrel effect

For example, AK me

Suppose I bought an IPLC directly from Telecom and sold it to three airports

Three airports have sold scientific services to you

If the airport operation and maintenance and load are not well done

You are directly affected

none of my business

But if my own operation and maintenance load cannot do

Will affect all the airports below me

And all of you under the airport

If we say that telecommunications are not doing well

Under telecommunications, under me, under me, under me, under the airport, all of you under the airport, all bombed

So some big airports with good experience

Because there is little upstream

Not affected too much

Small airports often do not have the advantage of purchasing

Cannot connect to some upstream resources

It's easy to be affected by the above layers

So the relative experience is poor

Also I mentioned Hanamaki

Because Hanamaki's Shenzhen-Hong Kong route is an advantage for me

I haven't used other lines in his house

Do not comment

Other IPLC suppliers

For example, there are more well-known suppliers such as CloudIPLC on the Shanghai-Japan line.

What I’m telling you all are the principles and things in the industry

Don't blindly trust any of the suppliers and airports I mentioned

Everything depends on your actual experience

Next, let me talk about the running problem

Some time ago a well-known big airport said it was gone

Affects a lot of people

But they don’t run for the sake of running away

Also out of helplessness

It seems that third-party payment services are restricted

So I had to shut down

In addition, they can do the finishing touches

Transferred existing users to another airport

The reason they run is

A user messed up and related departments intervened in the investigation

The airport will cooperate

And finally closed

So I have repeatedly emphasized that after overturning the wall

To restrain one's own behavior

This is the truth

Relevant departments will not talk to you because of your behavior of escaping the wall

It’s because you have done some of these behaviors that may endanger national security after you overcame the wall.

I'll talk to you

The airport also has this kind of distress

Because there are too many users, it’s not easy to control everyone.

With fewer users, you can only increase the price and make it harder to sell

So I understand them

They are the first responsible person when something goes wrong

Here I will share with you one more thing about airport inspection

That's why some big airports

Will ask for your personal information

I know you guys don't like and support this

Even called the patriotic airport

But what you don’t know is

The bigger the airport connects to the upstream line

The closer you are to the top, the closer you are to telecommunications

The stricter

The reason why the big airport is big

Because they are doing serious business

It is also a legal line

Nominally for these multinational companies doing business

And these requirements for legitimate overseas network service access

Then we must abide by the relevant laws and regulations of the country

So you need to count user information

It is convenient to cooperate with the investigation after something goes wrong

The purpose is to track down the individual

Intranet lines IPLC and IEPL themselves are not subject to censorship

But take the Shenzhen-Hong Kong special line as an example

Although the section from Shenzhen to Hong Kong has not been censored

But from you to the part before the dedicated line

In theory, you can be censored through the airport

In addition, service providers like Alibaba Cloud

It is also possible to audit the traffic within the network

So if you think

It’s safe to use the intranet line

You can sit back and relax

You are so wrong

It is always necessary to restrain one's own behavior

So please understand

If you are a serious user like me

There is nothing to worry about or fear

Of course if you really mind

You can choose those other

Airports that do not require your personal information

So I said before

Network information age

No real data security

Your personal data

Can leak out in any form

So either completely disconnected from the Internet and derailed from the world

Either the maximum degree of self-protection is enough

Of course if you do something illegal

You have to be careful

It's like there is a camera on a main road

Cooperate with our country’s Sky Eye project

The daily traffic may be tens of thousands of people

Who would usually stare at the camera to see your privacy one by one

See who you are

Unless you catch the criminal, right?

Our personal information

In internet traffic

Like a drop of water into the sea

Filter you out individually

It depends on the need and value

Personal Information of Us Ordinary People

Actually it's not that important

Don't take yourself too seriously

Finally, I spread some common sense to crack some rumors

First of all, IPLC does not mean fast

Just explained

The internal network cable is just a cross-border section.

What you should consider more

Delay in accessing the internal network cable from your own location

How about this delay

The second is the large bandwidth of IPLC

Is also a false proposition

Your upstream supplier

Directly determines the bandwidth of the IPLC

For example, I bought a 1G intranet line from Telecom

1G bandwidth

I can sell to you

The limit is a trillion

All are IPLCs, all are dedicated lines for telecommunications

Still that sentence, you have to look at your upstream

If we talk about the airport

It depends on how much bandwidth the airport gives you

So it’s not that IPLC bandwidth is bigger

These are two concepts

Must the third IPLC be stable?

Not necessarily

The internal network line itself can be stable

However, it is affected by factors such as whether the number of users connected to the computer room is oversold.

Because the underlying transmission logic is time division multiplexing

More people used

The data exceeds the carrying capacity

Data will be stuck in the queue

Cause the line to collapse

Even CN2 line

It may be better than the oversold IPLC that you bought at your small airport and passed through countless dealers.

The fourth point is that IPLC is not a wall so it is safer?

Actually, it's not necessarily true

Security is a very complicated topic

If you are interested, you can take a look at my eighth issue

The eighth issue has more than 1 million views

Finally, IPLC is not necessarily more expensive

CN2GIA's US West Line

It may be much more expensive than Shenzhen-Hong Kong IPLC

So the specific situation is analyzed in detail

Finally insert a sentence after over the wall

Please restrain your behavior

Don't touch national laws

Some bottom lines that are explicitly forbidden

Don't spread

Some related content that endangers national security

You say that I am a pink five hairs out of the public. It's up to you, right?

I can review your comments anyway

I will scold all those who curse

Then block you

remember

I tell you

It's good for you to restrain yourself

About intranet lines

And some information on the intranet airport

I'll share it with you all here

This is the tenth issue of the "Hardcore Over the Wall" series of videos

I will continue to update related content in the future

If you think my video can help you

Like subscribe message

If you can

Please consider opening my channel membership

USD 2 per month

Or say 10 dollars per month

Choose $10

I will give you gifts every three months

I have a book written by myself

Game controller made with me

For details, you can click here to find out what gifts to give

You help me grow my youtube channel

Let me help you share more relevant content for a win-win situation

I am the AK of Denmar Technology

End of current period