I think the Chinese are mainly the miners, there are not much bitcoin related services in China. They are the sellers of bitcoin.
They mainly the workers for the bitcoin. They work hard and secure the bitcoin network. They do not control it.
Agree. Mining farm owners just can't hold all incomes for future speculations, when they have to pay workers, electricity, maintenance etc. Yes, they earn decent amount, but don't thing than can affect BTC global market in that scale. too many people and businesses from all over the world are already involved in this.
I do agree, China cant control bitcoin even most of the miners are Chinese. Bitcoin price arent manipulated at all since the price depend on the demand and supply of bitcoin Where all are included all of those who hold bitcoin. As you said to many people and businesses are involved of this worldwide.