In addition, school teachers have no right to speak without investigation. Unless you are an in-service teacher in these schools, you can't find much useful information on the Internet. Presumably, you should also know that it is very shabby for university teachers to rely only on their salaries if they don't take over the projects of factories and mines outside. There may be some differences between different schools, but they are all in Jiangsu Province, and the differences will not be too great.