You might find this story from the BBC informative.

China cracks down on Hong Kong evangelists
http://www.bbc.com/news/blogs-china-blog-33619331

Yes, the story is indeed informative! Thanks for posting the link.

In the light of the religious crackdown you mention above, it's worth pointing out that those jobseekers with experience as Sunday School teachers or other voluntary religious work might well be advised not to include such information in their resumes for teaching posts in China.