China is more concerned about having their own cryptocurrency that they can control and tax. They want to control the people there that is how the government works. With all the bans and censorship it should come as no surprise. They don't dislike bitcoin, they dislike not having total control or at least and close to it as possible.
That's a good argument, China over the recent years have been moving very fast technologically speaking and we've definetly been shown what they can bring to the market.
They like the blockchain, they like the tech behind it. But they hate not being able to control that, and it's a reason why they've started making their own crypto-currency, some estimated they started this 2 years ago.
I think they'd have a huge amount of success with their own crypto-currency, it'll take all the good parts of bitcoin and other altcoins and make it a centralised option.