Yongding enclosing building is a form of Fujian earth building. Fujian Tulou originated in Song and Yuan Dynasties and matured in the late Ming and early Qing Dynasties and the Republic of China. Yongding Tulou is located in Longyan City, Fujian Province on the southeast coast of China. Divided into square and round. The oldest and youngest world heritage earth buildings are located in Chuxi earth buildings. Qing Ji Tower with a diameter of 66 meters has a history of 600 years, while Shanqing Tower with a diameter of 3 1 meter has a history of only 30 years. Yongding has 360 famous circular buildings and more than 4,000 famous square buildings. In July 2008, Fujian Tulou was listed as a world cultural heritage.