He is not perfect! Neither are you. Nobody is!

He would need to find an EFL post at one of China's best universities in order to keep his job. Or at a key public senior high school. Easier said than done, especially for a non-native speaker of English.

As for private high schools and private colleges/universities in China, many of them teach the lowest ability students. There are no entrance exams for student applicants. That is bad and contrary to what happens at many western private educational institutions. You must know this!

Then there are training schools that teach EFL only. You lump together private schools that teach what state middle schools teach with private training centers. You shouldn't do that - they represent two different categories of education providers.

The first thing to try to guarantee yourself before entering China to teach EFL is that you won't lose your job during your teaching contract. Generally speaking, public education providers are the best bet in this respect. They don't go bust nor are they controlled by meddling parents who know little about education.

Turning up at a private training center on a tourist visa to be part of a pool of potential FTs for the Chinese boss to pick the FTs whom he thinks will make him the most money from is asking for trouble! Properly credentialled westerners can get teaching jobs without jumpimg through hoops like that!