Nanxi River is mainly a scenic spot of Longwan Lake. The water is clear and gentle. The river is wide and shallow. The mountains and vegetation on both sides are flourishing. If the weather is good, the scenery is beautiful. The whole drift lasts about 40 minutes. From the second section of Nanxi River Bridge to the end of Lion Rock, it is said to be the most exquisite part of Nanxi River drifting.