For air quality go to aqicn.com and type in any city. When you buy fresh vegetables you must them thoroughly before cooking. Eating out is less of an issue than 10 years ago but still far from ideal.

It is easy to say good riddance. Easy to forget that a lot of that 1bn comes out of peoples pension schemes, and a lot of the small investors were not corporate fat cats, and in many cases ordinary people, including Canadians. Not the nouveaux riche with dirty slush money to hide.

The Anbang case is a new variation. It shows how some cities have fallen over backwards for the big corporate investments, and their due diligence has been shown to be inadequate. This is one of the downsides of Canada not having federal systems for this. Many provinces have their own way of doing things, and some think that they have little to learn from other provinces. Hopefully the lessons from this case will be taken on board across Canada.
I would hope that there is a case for compensation if the small investors can start a class action against the city governments concerned.

One down side for teachers, even if they live out, is that there are duty teachers who have a room to monitor the students in the evening and enforce lights out; for those students who board. Boarding students are normal in China.
The upside, if they are fresh out of college, is they don't have to rent accommodation outside (although they still pay fees to the school). This last thing is a parallel with Miami's situation. There is also access to breakfast in the school canteen.
I don't know about Chinese schools, but in the universities, staff can often buy the apartments on new campuses at lower than market prices.

Or move to another city. I know a lot of young Chinese people who have done that, to avoid parental intrusion.