Old Issue is Raised again: China banned crypto mining, Now it’s cracking down on

We already have known that China banned cryptocurrency mining for some past time ago.
And one of the bad impact is now determined, it's cracking down on any holdouts.
It is done because although China has banned mining since last June, it seems that there are still many miners who are doing mining activities in that country.
It means that the government may make more strict regulation and action.
And the question is, why when the price of Bitcoin is started to rise up, China issue about ban will be always raised up?
Well, it seems that there is some certain hidden goal why this is set at the same time.