Earlier quoted context omitted.
The chinese stock market (Shanghai index) has been through lots of boom and busts. It didn't affect western market in the slightest. I'd not expect otherwise. The only difference is that if the Chinese economy tanks hard (great depression style), this might be contagious to the rest of Asia and eventually to the rest of the world. But any guess is good if that happens.
Agreed a crash in China would have fallout but not 08/09. The Chinese housing market was fueled by the familial need to own a house. Which led people to lead no matter what people would buy property, basically "stocks always go up"... "housing always goes up"... We can never run out of buyers!
2 Most of the building boom was tofu dreg. We are talking from stuffing literal garbage from landfills into walls/foundations to using rebar that crumbles in your hand ending up with brand new buildings collapsing. Classic https://www.reuters.com/article/us-china-building-idUSTRE55Q...