Beijing Subway Lines in Operation:
Beijing's subway lines generally follow the checkerboard layout of the city. Most lines run parallel or perpendicular to each other and intersect at right angles. The subway is generally closed after midnight, unless a special occasion prompts extended operating hours. The first trains depart terminals at around 5 am and the last leaves at around 11 pm.

Line 1, a straight east-west line underneath Chang'an Avenue, which bisects the city through Tiananmen Square. Line 1 connects major commercial centres, Xidan, Wangfujing, Dongdan and the Beijing CBD.
Line 2, a rectangular loop line, traces the Ming-era city wall that once surrounded the inner city, and stops at 11 of the wall's former gates (ending in men), now busy intersections, as well as the Beijing Railway Station.
Line 5, a straight north-south line just east of the city centre. It passes the Temple of Earth, Lama Temple and the Temple of Heaven.
Line 10, a "┐"-shaped route to the north and east of Line 2. It follows the Yuan-era city wall in the north, passing just south of the Olympic Green. At the Sanyuanqiao, northeast of the city, Line 10 turns straight south and follows the eastern 3rd Ring Road through the embassy district and Beijing CBD.
Line 8 the Olympic Branch Line extends north off Line 10 with three stops in the Olympic Green Garden in north of city.
Line 13 arcs across suburbs north of the city and channels commuters to Xizhimen and Dongzhimen, at the northwest and northeast corners of Line 2.
The Airport Line connects the Beijing Capital International Airport, 27 km northeast of the city, with Line 10 at Sanyuanqiao and Lines 2 and 13 at Dongzhimen.
Line Batong extends Line 1 eastward from Sihui to suburban Tongzhou District.