Railway links with adjoining countries
The only railway link China has with a neighboring country that does not have a break of gauge is with North Korea. It also has a links with Kazakhstan, Mongolia and Russia, which all use the 1,520 mm (4 ft 11 27⁄32 in) gauge and with Vietnam, where the 1,000 mm (3 ft 3 3⁄8 in) gauge is still in use.
China does not have a direct rail link with Afghanistan, Bhutan, India, Kyrgyzstan, Nepal, Pakistan or Tajikistan, but is currently planning links with Laos and India (via Burma).
Variable gauge axle trains are sometimes used to overcome the break of gauge with neighboring countries. The mainland is also linked to the Hong Kong, but not with the Macau, which is currently being planned.