Subway Line 12 (under planning)

Departure: Mentougou (门头沟)
Terminal: Langfang (廊坊)
Other Information: Beijing Subway Line 12 is an oblique line which links the southeast and northwest areas of Beijing. It will run from Mentougou District in the northwest to Langfang in the southeast, serving for the important areas like Beijing Olympic Green and Zhong Guan Cun.

The foundation of this line will be the deepest of all the Beijing subway lines. It will run through the Temple of Heaven, and the famous Tiananmen Square, and will connect with many other subway lines, including the Subway Line 1, Subway Line 2, Subway Line 9, and the Subway Line 10. The construction of this line is expected to be started in 2015, and will greatly relieve the strain on Beijing public transport.