Upon reading, almost all bitcoin trading is done in China.
The share of the cryptocurrency that's traded via China's mainland currency escalated over the past few years, overtaking the US dollar as the dominant currency.
Those moves were made possible largely because of China.
yes that can be possible because they have the most bitcoin users in their country, therefore they will be trading bitcoins more that any other country, although other countries also have good number of bitcoin users and their number is also increasing from time to time, for example in my country in can observe that the number of bitcoin users are increasing too much.