On the west wall is a stele engraved in the fifth year of the Dazhong era (851), which records the official appointment of Hong Bian. The stele is 1.5 m high and 0.7 m wide, and it was divided into three parts. There is an inscription left by Zhang Daqian on the south sdie of the west wall, which says: "This is the masterpiece of the Mogao murals. It should have been painted by scholar-offical. Later Ma Hezhi learned this skill and became a famous painter too. In September, Zhang Daqian from Sichuan came and was surprised by it, then left this inscription. "