Jianshanhu Waterfall(尖山湖瀑布). There's a fork leading to the bottom and the top of the waterfall just by the road. Good for bouldering around the pond.
Trees, water and mountains are emerald green. Many pools in this river. I traced the right fork which has most fun. The mainstream is boring, thus not worthy going. There is a 2M slope in the middle (24.90268,121.77072) that you either need to booast up with your teammate or pull yourself up on the pipe to get over.