There has been a burst of laughter on the border of the United States and Mexico, where conflicts and tragedies have not ceased.

It's because of the pink rides.

<Oh! CLICK> The third query is 'Seeking across two countries.'

A pink seesaw is installed between the iron fences separating the borders.

In order to take this seesaw, Americans and Mexicans gathered together as adults.

They communicated with us for the first time, such as meeting their eyes and talking with them for the first time.

Professor Rael, who has installed seesaw, has been thinking about it 10 years ago as a purpose of "showing useless use of human barriers".

"We wanted to show that we are all alike and can co-exist," he said.

The netizens said, "The borders that I used to bloom with Seisoko became playgrounds." "It is time for us to unite as if we can not get seesaw by ourselves." And so on.