Beijing Subway
The Line 1 of Beijing Subway was constructed in 1969, it was the first urban subway system in China, the system has 9 lines right now, and connects 147 stations around the downtown and suburb area of Beijing.
Beijing Subway network is the second longest underground transportation system next to Shanghai Metro, the daily transportation has exceeded about 5 million people, more lines are undergoing rapidly to meet this mass transit need. The network will have 19 lines and 561 Km of tracks by the year of 2015.
According to the lastest report, the daily peak flow hit 5,327,900 on the last day of 2009.

Click here for a more detail map of Beijing Subway Lines.