Could be.
Blackrock and I think Vanguard are the largest US firms holding Evergrande dollar-based bonds. If either sells other investments to cover their Evergrande losses, we may see a downturn.
Latest I've read is the government of China is asking local governments all over Chins to write up plans for taking over Evergrande's stalled projects within their jurisdictions and, write contingency plans for keeping the peace if their locals demonstrate at project sites.
There was some mention of applying Evergrande cash to make solvent the citizens' retirement savings accounts banked with Evergrande. (good luck with that). And possibly pay some percentage of face value to bond investors in China.
In contrast for holders of US dollar based bonds that were sold internationally, apparently the government thinks the foreigners were offered good interest for accepting risk so let them sink. One theory is that China is moving back from allowing capitalism, to Communist inspired central planning without a profit motive, and they just don't care to bail out the overseas risk-takers when there isn't enough money to cover everyone.
I was amazed to see that Evergrande accepted deposits or payments to build 1.6 million homes that aren't being built, partly because suppliers and contractors aren't being paid. The locals all across China may not want to assume responsibility for those contracts!
Overall it looks like a Ponzi scheme ran out of new investors.