It is impossible for a school owner/operator to isolate a teacher in the manner described in an earlier post. Everyone has a cell phone and nobody should travel in China (or even leave the house) if they can't purchase a cell phone or use an Internet cafe.

Not really. There have been nightmare cases where schools have seized and withheld passports, salary pay, thus rendering a single and broke FT at the mercy of his merciless employer....plenty of such horror stories on these very boards.