It's at least an order of magnitude larger of a problem for China than ties to Russia are.
For anyone unaware, nearly 2/3 of China's household wealth is tied up in real-estate assets (for the US it's < 30% of household assets in real-estate). That's a doubling over what it was a decade ago. China's socio-political stability is particularly bound to the condition of their real-estate market. A crash there would be devastating; if housing were to fall enough to revert back to that asset class being 1/3 of China's household asset base, maybe $30 trillion in national 'wealth' would have to vanish.
An additional stress on the system could make the problem exponentially worse.
Why is this an issue for China anymore than the West?
In fact, China has the majority of the world's grain stash. https://asia.nikkei.com/Spotlight/Datawatch/China-hoards-ove...
https://impact.economist.com/sustainability/project/food-sec...
The US ranks 9th whereas china ranks 34th. They're not going to famine or anything but food prices, or really just inflation more broadly, could be an issue. The reason china stockpiles grain is because it doesn't produce enough for itself.
The same logical structured can be applied to not China:
"X country's biggest problem is ... food availability due to lower exports of wheat from russia and ukraine could cause an issue too."
Calories/per resident? There's many ways in which that is flawed.
https://impact.economist.com/sustainability/project/food-sec...
not so fast, they buy 70-year leases
(This seriously happened BTW, if you dont recall)
If Evergrande defaults, foreign bondholders will claim their collateral.
So instead, for example, they have state-owned companies buying up Evergrande's assets, then Evergrande using that money to pay back local creditors, so that Evergrande is eventually left owning neither money nor assets to pay back foreign bondholders. Nothing left to seize in court.
Meanwhile, they are trying not to create a shock in real-estate prices that would undermine the other overleveraged developers, such as would occur if Evergrande unloaded all of their assets at once. Each developer is balancing their debt-to-asset ratio, so if their real estate assets drop in paper value, they end up in Evergrande's position.
Foreign bondholders appear to be playing along with this, which is fascinating; it suggests that either those bondholders are, too, looking to offload their hot potatoes and want to preserve the appearance that they're still worth something as they search for buyers, or else they're using those bonds as collateral for their own loans. As long as credit rating agencies play along and don't drop the credit rating to full default, they may be able to do so.
At a more general level, I'd say it's very tough to let companies like Evergrande/Freddie Mae&Fannie Mac go down the drain because you risk the whole system going down, no matter if you're a de facto autocracy (like China) or a not so perfect democracy, like the US.
In Evergrande's case they seem to have giant projects that are earmarked as investment speculation as opposed to intended primary dwellings or immediately rentable. It is entirely possible that whole districts of buildings are never of enough utility to draw residents at any price above maintenance.
A company can go broke with either mistake but if a government knows the need for the collateral mortgaged actually exists then bounds from the macroeconomic situation apply so their shoveling of money will have an end.
A large chunk of Chinese savings is tied to it. If they allowed people to sell or liquidate their shares, it would cause real instability.