Chengqi Building: is a representative of Fujian Hakka Round Tulou, known as Tulou Wang, located in Gaobei Village, Gaotou Township, Yongding District, Longyan City, Fujian Province, built in the Ming Chongxuan period, and has been preserved so far. Chengqi Building has a huge scale and a strange shape. The building is four floors high. There are circles in the circle and circles. There are more than 400 rooms in the circle. The whole building is like a castle. In 1986, a set of "Chinese National Residence" stamps issued by the China Ministry of Posts and Telecommunications. The one-yuan design is Chengqi Building.