China always had a requirement to grow 6% for every city. So I believe some numbers are inflated ( mostly about real estate eg. Ghost cities, ..). This doesn't give many issues, because there is actual growth.
The reasoning goes that when the growth slows, the entire pyramid goes crumbling down ( debts).
As weird as it is, I think it's an objective overview of everything China related. It's a personal hunch of all the FOMO I read about China and can't support it with links.
The reasoning I follow is: expansion internally (China), expansion externally ( requirement) with Africa / one road one belt, knocking down on bank fraud, no export of money internationally, ... In the process, trying to become too big too fail.
We'll see if I'm right about this.
Ps. I could be wrong, so comments are appreciated