Because China is on track to end up like Japan, an incredibly moribund economy with a shrinking working-age demographic(the population is barely growing and set to peak within a decade), an allergy to any sort of unemployment, even if temporary, and lots and lots of bad debt. I've been saying this for years, China copied the Japanese model right down to the bad debts. Japan has been creating "roads to nowhere" for decades and it has essentially netted them very little besides more debt(Japan has the highest debt to gdp ratio in the G7, something like 250%, though unlike the US debt most of it is still held domestically...for the moment anyway). China today is Japan circa 1988, lots and lots of exuberance, but the writing is on the wall. It will be interesting to see if China can learn from Japan's mistakes. My guess is no since the CCP knows that their biggest weakness is unemployment, but I guess we will see.