Nanxi Tulou Group is one of the representatives of Yongding Tulou Group. It is located in Xiannanxi, Hukeng Town, Yongding District, Longyan City, Fujian Province. A Nanxi River passes through it. On the banks of Nanxi River, there are more than 100 Tulous, large and small, with round buildings, square buildings, hexagonal buildings, octagonal buildings, etc., and there are many types. The most representative of these is the Zhenfu Building facing the Nanxi River.