Be aware: about 60% of the climbing occurs in a "scenic tourist park". As long as you travel by motorbike or bicycle the 100rmb entrance fee is not required. You will learn about this in the first few days in Yangshuo. It doesn't really concern climbers, but is pertinent info...especially when considering a taxi during inclement weather.
All of the land belongs to the Chinese government and has been appropriated to respective farming villages. Each crag and it's access is then controlled by either the village collectively or a specific person, so technically we as climbers are trespassing 95% of the time in China. However, most villagers welcome climbing and do not present any problems. On the contrary, certain crags have historically had issues. If there is signage at any crag asking for small donations (1-5rmb for vehicle parking), please be willing to pay. This money goes directly to the local villager whose land we are using and supports the local associations' agreement with the villagers. The money is minimal and the result has been very beneficial to resolving any issues. Thank You.