Even though there are walk ways in the upper sections of the cliffside, we weren't allowed up there. It's such a pity but whatever we saw was impressive. I like the light and airy color of these carvings.
There's sometimes no rhyme or reason to how the Chinese authorities do things. I heard that Tibet is closed (again) to foreign visitors. This was because of some protestors who killed themselves by setting themselves on fire. The Tibetan culture is so free and beautiful and to see them being suppressed by the Chinese government is heart breaking.
Buddhism was introduced into China some 2500 years ago from India.