Some of these companies have trillions in RMB on their balance sheets.
I don't understand this sentence. It is nonsensical to use balance in this way.
You wrote "trillions in RMB". Let's assume (your hand-wavy use of the term) balance sheet means: outstanding debt. Further, each 1T RMB is 137B USD. How many companies in the whole world carry more than this much debt? Let alone Chine property developers? Wildly overstated.Also, central bank's can print money, by definition. They can also buy debt issued by these companies to repay maturing debt. Then they can forgive this debt. Why would this harm "the assets of the middle and lower class"? The misunderstanding of monetary theory appears weak here.