Kim Jong-un visit: What else crosses the China-North Korea border?

Kim Jong-un visit: What else crosses the China-North Korea border?
- Kim Jong-un's recent visit to Beijing was the North Korean leader's first trip across the Chinese border since coming to power in 2011. That border with China is one of the main ways North Korea interacts with the outside world. Reality Check looks at what we know about the people and goods that cross ...