Bear in mind this can cause the loss of face so valuable in Confucian cultures

I think we should bear in mind that it wasn't so long ago that Confucius and his cronies from Qufu were given the Big E and eradicated from Chinese culture at the stroke of a hat; so, I pay scant regard to Confucian sensitivities. We all get all unnecessary and sensitive when giving advice and subsequently/consequently being told to sod off, I see no reason why Chinese teachers should be any different, or that I should make any special allowances, bearing in mind a dubiously engrained Confucian element in the culture, now all of twenty years old.

If you haven't you should do the Confucian Pilgrimage up Tai shan, or as we say Mount Taishan (note the redundant word mount) You'll come down muttering all sorts of wise fings like "Confucius he say, man with big belly should not put too many noodles in Wok" or in Chinese "Kongzi shuo da duzi de ren bu yinggai yici zuo taiduo fan."