State Administration for Religious Affairs (SARA) and the Buddhist Association of China are in charge of regulating religion in China.
So far, what effect have they had on doctrine for Chinese (non-vajrayana) Buddhism?
It's already well known that the Chinese government is hostile to the Dalai Lama.
(Also, as a side note, for those skeptical of any government's ability to regulate belief and practice- some percent of American Zen's doctrine and practice can be traced to Meiji era government initiated reforms)