Hua'an County Tulou existing 68, built in the Ming and Qing Dynasties, belongs to the southern Anhui Tulou, compared with Fujian Hakka Tulou, the number is small, but has distinctive regional characteristics and artistic value, the most representative is Hua'an County Xiandu Town Dadi Village Eryi Building, Dongyang Building, Nanyang Building, etc. The earth building looks very solid, the walls are thick and preserved, the earth building center inner courtyard is large, there is no additional building, each unit has several houses, separate entrance and exit doors, each door cover has different wood carvings.