Mogao Grottoes is a treasure house of desert art in northwest China, which was founded in the pre-Qin period of sixteen countries. After the construction of the Sixteen Kingdoms, Northern Dynasties, Sui Dynasty, Tang Dynasty, Five Dynasties, Xixia Dynasty, Yuan Dynasty and other dynasties, it formed a huge scale. With 735 caves, 40,000 square meters of murals and 24 15 clay sculptures, it is the largest and richest Buddhist art place in the world. In modern times, the Tibetan Sutra Cave has been discovered, which contains more than 50,000 ancient cultural relics. 196 1 year, the Mogao grottoes were announced by the people of China and the State Council as one of the first batch of national key cultural relics protection units. 1987, Mogao grottoes was listed as a world cultural heritage.