Not for long china can controlling bitcoin price, im sure now they on trouble due their efforts to make the price under $ 1000 always can not last long and now all trader are smart they not easy get in on the trap.
Honestly I used to believe that China is trying to control the price when Bitcoin price go up more than $1000 but the last two press release of PBOC does not mean that they are or in a position of wanting to control Bitcoin price. They are just after the implementation of the law regarding money laundering and possible support to the terrorist activities. There is no way in their announcement that they are banning or want to control bitcoin price. they are just preparing their exchanges for a more legal way of implementing rules on the transactions of Bitcoin.
Their interference stems from a desire to prevent ordinary Chinese from getting hurt. Other countries do it by issuing advisories and warnings; China does it by interfering in the market. Chinese are by nature gamblers and so Bitcoin is very attractive to them.
what you say is called conspiracy theory with a hint of racism

Chinese do the same thing as any country, they have been issuing warnings to their people about bitcoin to make them understand it is not magic money to make them rich and warn them about not investing their whole life it in. nothing weird is going on there, and bitcoin market is too small for a country to even consider keeping its price down. while there are huge markets such as Gold and Forex with much more investors.