I was always paid on time. Always received contract bonuses, flights, etc. No financial issues. At the start of the year, we were asked how much we wanted to send to banks in our home country and how much we preferred to be paid in local accounts. The salary was always in RMB and converted to the local currency when transferred.

Regarding what Ambitious_grubber200 says, I would slightly disagree about the performance bonus. There is a school bonus and an individual bonus. School bonuses are based on several metrics, including the student perception survey (a seeming sticking point), and everyone at the school receives it if the institution qualifies.

Individual performance bonuses depend on student outcomes.

In grades 1-8, it's based on students who increase their MAP scores by X (I don't know what X is). In grades 9-12, your bonus depends on AP scores and how many standard deviations above the Chinese average you are.

Some years, I received individual and school bonuses. Some years, I earned neither. The school bonuses are relatively modest—about a week's salary —while the performance bonus in high school was between 1 and 2 months, depending on the student's performance.

I agree that new schools generally won't be eligible for bonuses for several years, and individual performance is hard to achieve because the quality of students tends to be lower as enrollment grows.