I make a popular science video and all the emperors learn from it!

[Science Popularization Short Video Collection Series 7. ]

[Twenty-five, check out the most bizarre borders in the world. ]

[How many of the most bizarre national borders in the world do you know? ]

[Fifth place, volleyball net national border. ]

[Just look at the United States and Mexico to see how casual the dividing line can be. ]

[A group of people are playing volleyball, but the position of the net in the middle is the dividing line between the two countries, the left is the United States, and the right is Mexico. ]

[It is said that the residents here hold a volleyball game here every year. ]

[To enhance the friendship between the two countries. ]

[I just don't know which country this volleyball belongs to? ]

[Fourth place, the national border on the table. ]

[Can you believe that you can visit three countries in 10 seconds? ]

[In fact, it can really be done! 】

[This triangular table has the national emblems of three countries printed on it, representing Slovakia, Austria and Hungary respectively. 】

[Going around this small table, you can go abroad three times in just a few seconds. 】

[It is said that this design is to reduce the barriers between the three countries. 】

[I don’t know if it can be reduced, but it must be convenient for three people to play Landlord. 】

[The third place is a homeowner with dual nationality. 】

[The border between Helsinki and Belgium is right at the door of a house. 】

[If you sleep here at night, you will accidentally go abroad if you turn over or go to the toilet. 】

[In addition, in order to distinguish visitors, the homeowner has to install two doorbells, one in Helsinki and one in Belgium. 】

[If you want to sell this house, the procedures should be very troublesome, right? 】

[Second place, an office with dual addresses. 】

[The border between Germany and Holland is in the lobby of an office. 】

[The round black floor is divided into two halves by the border. 】

[This office is very special. It has both a German address and a Dutch address. 】

[There is a mailbox on the German side and one on the Dutch side. 】

[Although there is only a line between them, if you send a letter from one country to the other, you have to wait outside for a week before it can be sent back. 】

[It is said that people there like to make such pranks. 】

[First place, a library spanning two countries. 】

[In the border area between the United States and Canada, there is a library called Heskel. 】

[The border between the two countries just passes through the library. 】

[It is divided into two parts by a black line, and residents here can go abroad in the time it takes to borrow a book. 】

[Interestingly, this dividing line seems a bit arbitrary, but the rules are very strict! 】

[It is said that 15 years ago, the elevator on the Canadian side of the library needed a crane to repair. 】

[But the crane is on the other side of the black line, in the United States. 】

[It's only a few steps away, but if you want to move the crane, you have to pay a large tariff to the United States. 】

[...]

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"It's so interesting~¨ ～¨ ."

"Can the border be divided so casually?"

"If the house on the border is sold, can it only be sold at half?"

"Haha, you finally found the key!"

"......"

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Qin Dynasty.

Meng Tian was speechless.

"¨" ¨" So casual? Aren't you afraid that foreign enemies will sneak in? "

He was dumbfounded.

It would be fine if the border line was in an open space, which would be convenient for surveillance and have a buffer zone.

But if it was in a house with two countries at both ends, wouldn't it be very easy to go in and out?

If one country had bad intentions, it would be too easy to arrange spies to infiltrate!

Xianyang Palace.

Ying Zheng also felt very novel.

"The border should be based on mountains and rivers. ”

Look at the territory of the Qin Dynasty and you will know how the border should be divided.

Either there are mountains separating the two countries, or there are seas and rivers separating the two countries.

The advantage of this is that it is easy to defend.

(de le de)(de le de)

Another reason for this division is that the war has reached its limit!

Since it is not easy to continue to expand, it is used as a border.

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Ming Dynasty.

Zhu Yuanzhang was amazed.

“Interesting...”

“People overseas are just good at making trouble.”

“How can you let others sleep peacefully on your own bed! If you want us to see, it would be better to demolish all the houses on the border to save trouble.”

He did not understand this approach.

Aren’t you afraid of something going wrong? Lili.