They should, but you know very well that they were not angry because the owner hired foreign workers on the wrong visa.

100% chances that the officials were angry at the owner because he didn't pay them the monthly bribe required to stay out of troubles, so they found a way to cause him troubles by kicking his FTs out, an English training center or an international school without FTs can't run for very long.

We are talking about the same officials who do all sorts of illegal things like collecting bribes and illegally expropriating people with law enforcement units or chengguan so that some wealthy developer can build one more ugly concrete residential block, whose salaries are 5000RMB but who drive Rolls Royce and wear designer suits, and probably have millions in cash hidden somewhere, who take weekly trips to Macau to launder dirty money.

I say this but after so many years here I obviously have relations with corrupted officials.

This is China, the land of nonsense and contradictions.

bai3 shi4 lao3 wai4 means you're a knowledgeable foreigner (capitals not used in pinyin) but what manner of knowledgeable foreigner are you? I'd say not from the English Speaking world, as this is not a mistake we are likely to make "so they found a way to cause him troubles" and you said 'troubles' twice. I should say that one can say 'troubles' but not in the way you did.

So you have (still have) and 'obviously' so, you say, relations with corrupted officials!? Did you leave your relations with these corrupted officials, and if so why? Poor old Uncle Sid and Aunt Meg bound and gagged- hahaha only joking lol.