They dont like centralized things as simple as that.Knowing that China is a powerful country which they are a communist type of government which it isnt surprising that they do love on everything to be tracked or controlled
and now that bitcoin had really made out things possible which cant really be controlled nor be traced on where China did really have some bad views and impressions on it.They do even create digital yuan which do signifies that they are sticking with centralization.So its better to get yourself get used into things whatever China would make out decisions.