Never come to the national map, it's not the national map, it's the first basement. Moreover, Tiancheng has been demolished for n years, and now it has moved to China Academy of Agricultural Sciences, called Oriental Tianzuo Mall. Take No.660 south of Lenovo Bridge and get off at China Academy of Agricultural Sciences Station, and walk back 200 meters. When you come back, get on the bus at the same place and get off at the second stop, Hongmin Village.