This can only mean one thing. The Chinese government wants to use that electricity for something else. Why would China
give up it's dominance over a global currency? My prediction is that they are working on a GovCoin and they need this
electricity to mine that coin. Next thing you will see China released their own GovCoin and that they are using their cheap
electricity to mine that. Mark my words...
the Chinese government wants FULL control over everything and Bitcoin is not
giving them that control. 
This bold part is something that is obvious that is their objective right from the beginning and what they want to ensure is that's if they cannot control bitcoin, then they want to make it less effective so they are trying every means to suffocate its continued dominance. Its so something disappointing to them with the amount of technological, financial, economical, and even political breakthroughs that they can boast of, they cannot not control bitcoin.
The simple truth is if they decide to make sure that the cost of mining in China becomes too expensive, it then create an opportunity for other countries to step into such shoes which is what will eventually happen because bitcoin is definitely going into the future.