Introduction to Sanqing Hall: Sanqing Hall is the main hall of Yongle Palace, also known as Wuji Hall. It is a sacred hall dedicated to "Taiqing, Jade, and Yuanshi Tianzun of Shangqing". The murals on the four walls around the hall cover an area of ​​403.34 square meters, and the overall composition is the "Chaoyuan Picture". It is an image of gods worshiping Yuanshi Tianzun, the founder of Taoism. It is centered on the eight main statues of Emperor Houzhuang, and is surrounded by more than 290 statues such as Golden Boy, Jade Girl, Tuisong and Xiusong. The entire mural has a rigorous composition, a broad scene, detailed characterization, and lifelike expressions. It can be called a masterpiece among ancient paintings.