As Bitcoin is a decentralized online transaction system which means that government has no control over it. It is true that when China banned ICO's and exchanges,there was a huge drop in the price of Bitcoin but a recovery was seen very soon. People believes in it's potential which is increasing it's demand and this increase in the demand is taking Bitcoin to new highs . After that China incident the price was fallen to apporximately 3000$ but now the price has reached it's all time high value i.e. 5800$. So i dont think Bitcoin really need China or any other country to reach new highs.It is the most renowned digital currency that only depends upon it's demand among the people.
We already passed the stage when China has a huge says in the price, manipulation or otherwise. The last's month saga has ended and we are not enjoying the best without them so its safe to say that we don't need them. They have done their share to promote and spread what bitcoin is today right now. But they have chosen to moved one step back.
If it was before, when China was still the largest bitcoin market in the world, I could say that China could have an impact on the value of bitcoin. However, at the present time, Japan is the only country that can do that. With the selfishness of the Chinese government, they missed the big pie bitcoin.
They are not selfish, they fell threaten that's why the sudden u-turn with bitcoin and crypto's. They can't control the influx of bitcoin into their economy so their Yuan is affected. Japan made leaps and bounds upon taking over from China. What China did in a year, Japan did it in a matter of months. Exchanges opening here and there, huge amounts of trading volumes per 24 hours, opening bitcoin mining hardware. This is some of the stuff that Japan has did to bitcoin in short amount of time.