Yunei Waterslide (中文版：宇內溪滑水道) is a sloped waterfall in Taoyuan, Fuxing Township. The riverbed in that area is one large rock carved by the water, which is fun to slide down. There are many smaller pools and deep places to swim further up the river. It's a popular place for locals to come and fish.
The hike is short, but the last section is a little precarious, so be careful when walking to the waterfall.
The waterfall forms a natural waterside. The pool is deep in the center, but not at the exit of the slide, so don't dive headfirst off the edge (and bust your head open like I did).
Taoyuan City, Fuxing District
Parking: 24.7908, 121.39413
Waterfall: 24.79045, 121.39589
Detailed Map: https://goo.gl/NcZ13t