Nice map but. . . – Beijing Subway Map 北京地铁线路图 Review

This is a nice map, but where are the subway line numbers. If I remember correctly subway announcements on the trains are made by NUMBER, not color of the line you are transfering to. Add the line numbers to this map and it would be awesome!
Review by rice_4_me on Beijing Subway Map 北京地铁线路图.