There are good indicators that an economic stagnation or recession are coming, and that could potentially hurt the CCP long term.
Now are you going to say the data collected before is unreliable somehow and this time it's reliable?
China central planning pushed for and encouraged 'over buiding' for efficiency and surplus, doing bulk deals on concrete, streamlining steel creation from iron ore, etc.
If you put aside the traditional western stock market view of companies trading in the building domain (which grew and collapsed) and look at it as state planning for bulk efficiences of scale it perhaps makes more sense.
Right now it makes sense to look at what the next five to ten year state backed push will be as we might anticipate more "one foot in the free market" bubble like growth there.