Those "idiots" follow their nation's traditions to prep for tests, and they gain plenty of trust and make a whole lot of money from locals. Once again, the question of how you'd run an educational institution in China has to be asked. So, let all the readers know what such a well qualified and knowledgeable foreigner as you would do, if he were to educate Chinese reasonably; and, while you ae at it, explain how you would manage your school/center on mainland China.

Herr Doktor would be well-advised to provide such expertise to a school owner/government body who had chosen to employ him as a consultant.

I think he'd be a mug were he to do it for free, as it were, by posting his pearls of wisdom online!