One of the four Gansu Grottoes, which is jointly called "Sister Grottoes in the East of Grottoes in the south of Ganchuan". There is no free car in Qingyang. I took the bus from Pingliang for about three hours. Then I took the shuttle bus to Zhenyuan at Qingyang North Bus Station. When I passed by the Bei Grottoes Temple, I told the master. Tickets 30, the caves opened three, and the visit was completed in half an hour. Going back to Pingliang should be early, and there will be no car late. The latest is Qingyang Passenger Transport Center, which is the South Bus Station. It is the latest shift back to Pingliang at 5 pm.