Beijing Subway Line 9 started from Guogongzhuang in the south and ends at the National Library in the downtown. Line 9 has 12 stops with about 17km of tracks in operation. The whole line 9 started formally operation in the end of year 2012.
Following is the first and last train timetable for all stations on subway Line 9. It's a good source to plan your journey since subway trains in Beijing are running in very high frequency.
Also need route map for Line 9 as well as for other lines? Please click here for Beijing subway map in high resolution.