What's unsustainable debt? And compared to whom? The U.S., Japan? The U.S. alone has printed $6 TRILLION money it simply doesn't have and yet you seem unconcerned about it buddy. The last time the U.S. messed up their economy (2008) the whole world suffered and if it wasn't for China's massive infrastructure spending the economic recovery would have taken a lot longer worldwide. Ungrateful lots like you have this fake concern about China like the country is run by intellectual midgets coupled with the emotional maturity of babies, when the opposite is actually true.
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Maybe to vent this much is unwarranted. I think however you said something very true :
The belief in western circles that CCP and various agencies created thereof are inept and intellectually backward. I have noticed that belief taint the observations of these Ivory Tower residents. No, the world's second largest economy doesn't employ idiots. Many of them are exceptionally intelligent and has degrees from abroad as well as the best of Chinese educational institutions ( Tsingua, Harvard, Cambridge etc).
Likely these "observers" and doomsayers believe the CCP is running a puppet show with the agencies like SBIRC and PBOC. Better to leave them with their ignorance.