Introduction to the Mogao Grottoes: There are 735 caves in the Mogao Grottoes from the Northern Wei Dynasty to the Yuan Dynasty, including Zen Grottoes, Hall Grottoes, Pagoda Temple Grottoes, Dome Grottoes, "Shadow Grottoes" and other shapes, as well as some pagodas. The largest caves are more than 40 meters high and 30 meters wide, while the smallest ones are less than a foot high. Many of them are masterpieces of existing ancient buildings in my country. There are murals, painted sculptures and other cultural relics in the cave.