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.