I will believe it when I see it.
The RE bubble is bad but substantially less bad than what the US was facing in 2008. There is a big difference between over-leveraged developers (the Chinese problem) and rotten Main street banks (which was the US problem).
In China's case we are likely going to see a continued drop in housing prices for a little bit longer until they plateau. However they are unlikely to see growth again for a long time unless Chinese government changes tact. This isn't a bad thing as right now Chinese homes are some of the most unaffordable on the planet, especially in desirable cities. Also it will lead to speculation and investment moving outside of RE and into other vehicles like equities which will improve the breadth and quality of Chinese financial markets. The other bad things that will happen is construction companies will likely be in distress, large infrastructure projects/spending directed by the CCP will save the good ones but there will be a bunch of consolidation and downsizing. Not a particularly bad thing given the changing population dynamics probably requiring the construction of less housing than previously. Impact is unlikely to spread beyond RE because of how compartmentalized funding is in China. The government controls all the major banks and as a result they run under very low-risk capital regimes. It's much more likely the big financial fallout will be from foreign investors that were greedily holding onto risky Chinese commercial paper.
All-in-all I actually suspect this to go out with a whimper rather than a bang. The way systems are setup in China there just isn't really the potential for a bang outside of like big social issues causing a revolution or something but generally speaking that doesn't happen. Usually as dissent grows they recognize it won't go away and start doing something to appease the people. Recent example being their effort to deal with pollution in the major cities, etc.
So yeah. I get that Western folks, Americans in particular don't understand the Chinese system and wish ill will upon it but the reality is that it's a lot more robust than said folks give it credit so don't bet on it failing anytime soon.