China and North Korea install electrical fence along the border between China and North Korea.

China and North Korea install electrical fence along the border between China and North Korea in order to stop smuggling goods from the outside world and escaping from North Korea to outside the world.

Electricity supply is not sufficient so that the electric fence is operation only 3 to 4 hours a day.

http://marygreeley.com/?p=55926

It is getting more difficult to cross the border between China and North Korea. I think North Koreans can cross the border when the electricity to the fence is off.