Yes that is true, if china does not accept mining they could also relocated their mining company to other countries with stable electricity like the UK since UK does not have any problem with cryptocurrency , they could use the electricity over there for the mining process because I understand mining of cryptocurrency requires a lot of electricity which obviously most Africans country will not be able to provide,
I don't even know if China was directly banning cryptocurrency or was only dissociating her financial institution from using and accepting cryptocurrency,, I believe if they were only banning her financial institution from accepting cryptocurrency then I don't see why china shouldn't accept mining of cryptocurrency in the country.
I was even told that the power of mining cryptocurrency was even collected from China but up till now I don't really know the reason and I cannot verify this information if it is really as truly as they said .
if this is true I would like to know why this was collected from them and based on the information I have gathered they said mining of cryptocurrency has been moved to certain part of America, probably maybe that is the North America or somewhere related to that.