I don't think so, bitcoin is growing up and if in mining you mean there are some companies outside of china that mining bitcoin. 
you might right,but leets see how china take control on some exchange,and big farm on china have biggest bitcoin mining,we can't deny that china have better power consumption and can handle any problem related miner,and also their exchange have better price than coinbase or itbit. Farms are big in China and as well as mining sites. But the thing is I don't know if they are really controlling the price of bitcoin or they can control or predict that is going to happen with bitcoin.
Because we all know that if something has in favor of majority then they can control it.
The Chinese are controlling about 70% of the mining at the moment. But their proportion has been reducing.
I don't think that Chinese are holding 70% of bitcoin because allocation of bitcoin is not still finished to its limit of 21 million.
As the halving comes it is going to add another supply of bitcoins in the market.
They are just mining it but they are selling it after they mine.
They are also behind the latest (as in last few months) Pump, When the expected moonshot does not occur they will try a final pump and if that fails (which my money says it does) there will be an EPIC dump and you might as well just give up on BTC (as an investment for growth) at that point. Go ahead and quote me on that.