We can't understand the source, it's written in the Chinese language.

China is one of the world's leading hardware producers, they make some mining rigs, and they are being ordered by some countries that want ASICs mining facilities. Many BTC miners are from China and I'm wondering what's going to happen if there's few miners left on BTC. Back then it's just a suggestion, and there's a possibility that it will happen right now.
https://www.wired.com/story/china-says-bitcoin-wasteful-wants-ban-mining/

The best reason for this is that they want to encourage more of the EOS which the Chinese people strongly endorse.
https://cointelegraph.com/news/chinese-public-blockchain-index-ranks-bitcoin-14th-while-eos-tops-list