As more information comes to light, I shall post it here. Let the teachers in Yuncheng, who likely cannot access this site, confirm or deny what is posted.

What is most troubling is that the same behaviour has been confirmed to be occurring in Xi'an, a different province that is on the south western border of Yuncheng.

That suggests that this policy of harassment and forced fines may be at least regional, and perhaps national.

If the police have lost 50% of their income due to the crackdown, then it is possible they will attempt to make it up on the backs of teachers.

They do not care if this makes teaching a losing financial proposition for foreign teachers. They want their cut. Period.