That is good advice Ex-TC and I endorse it. Yes, anybody who has a lot of teaching experience ( over 20 years ) should not work at any training centre in China, Korea or elsewhere. To work at these places is an insult to an experienced teacher.

Stick to universities, there are SOME in China that are still ok. Wuhan, Shanghai, Tianjin, Beijing, they are the places to look.

And I agree about location also, Hainan, Jilin, Jiangxi, Shanxi, Harbin, these places should be avoided, not just because of weather but also corruption and stupid people.