Clockwise from the south–west (the border that meets the South China Sea), they are: Vietnam, Laos, Myanmar, Bhutan, Nepal, India, Pakistan, Afghanistan, Tajikistan, Kyrgyzstan, Kazakhstan, Mongolia, Russia, and North Korea.
The longest border is with Russia (3,645 km, 2,264 miles); the second longest is with India (3,380 km, 2,100 miles). The shortest is with Afghanistan (76 km, 47 miles). The border with India is one of six that are disputed.
© Haydn Thompson 2017