Nanxi is a creek in Hukeng town, Yongding county. It flows upward from Hukeng and snakes through villages including Xia'nanxi, Xinnan, Nanzhong, Nanjing and Shijia. Standing on a hill in Jiaotang village, visitors can see Nanxi Creek passing through the valley, surrounded by green mountains and terraces.

Along the creek, there are over 100 tulou of different shapes: round, square, octagon, hexagon, triangle, D-shape, ellipse, and even round and square combinations. The tulou are scattered along valleys and banks, like a dragon snaking for tens of kilometers.

Admission: 50 yuan ($8.11), 40 yuan on Tongcheng.com.