The Nanxi River Scenic Area is located in Yao Autonomous County at the mouth of the Red River Autonomous Prefecture. Featuring scenic spots such as the Nanxi River limestone tropical primitive valley rain forest, the Huayu Giant Spring, the Silianshan ancient fortress cultural site, and so on, it is worth visiting. You can also drift on the river. On the path of Nanxi River drifting, there is a huge rock in front of the beach, like a gate, called "Rock Gate Pass." When the rubber boat passes this threshold, its bow and stern tilt up alternatively, like a seesaw. It is breathtaking.