Yes !I believe that China should back to the Bitcoin. Because they have good economy and technology in the country.And the other hand there are many mining plants are built in the country.Therefor if they come back there will be many opportunities will be create for bit coiners and it will be big support to improvement of cryptocurrency market future.
China's return is a good thing but I think that would be unlikely. This is because the Chinese government has always promoted monitoring the profitability of its citizens after months and years.
Bitcoin broke that and the Chinese government could not get an accurate figure about it. That is one of the reasons why they have banned the bitcoin trade. I am really sad about this. Hope the miracle will happen.