It is a national AAAA tourist attraction and provincial cultural heritage site. Located in Tiangong Township, 20 km south of Langzhong, Tiangong Hall was initially built in the Tang Dynasty and rebuilt in the 3rd year of the Reign of Emperor Shunzhi. Because of the profound astronomical culture in Langzhong, two astronomers of Tang Dynasty, Yuan Tiangang and Li Chunfeng settled here to carry out astronomical activities and write and propound ideas. They were buried here after death and Tiangong Hall was built in memory of them. The Scenic Area is featured by gorgeous landscapes with mountains and winding waterways. The crown-shaped terrain with nine mountain ranges is called "Nine Dragons Holding the Crown". Now it is the only AAAA tourist attraction of Fengshui culture in China and the pilgrimage site of Fengshui culture for the tourists from home and abroad.