The cache was a outdoor waterproof plastic box which can hold swags hidden in a crevice of some giant rocks on Baoshi Mountain. There are many trails leading to the cache, trailhead listing here is the closest way to approach.
At GZ (about 66 meters or 217 feet high), you'll see a stele engraved with words "宝石流霞" under a pavilion. Pls find a narrow path showing on the picture attached below,
then you'll see a huge rock "hanging" on the path. The cache was covered by two small rocks in the crevice at right hand side under the "hanging" rock. A flashlight is better for searching. You may need a little climb to stand on the rock face to grab it. Check the pics added and be careful.
After your hunting, it's highly recommended that you continue you way to the mountain top, a summit you could enjoy the whole outlook of the West Lake. Hope you enjoy the scenic lookout there.
** something you should know before geocaching in China **
The google map in official geocaching app has a large off by about over 500 meters in China. But the google satellite view in third party app such as c:geo match. The OSM or your GPS is also reliable.