Even the Chinese people are skeptical that China can enforce its Crypto ban. For me, I am certain it cannot.

Since the beginning of 2017, the People’s Bank of China had been scrutinizing domestic crypto exchanges in the country. Then on September 4th, 2017, China’s Central Bank issued a notice prohibiting all ICOs, judging them as an illegal method to raise funds. Following the ICO ban, government officials declared a ban on all domestic crypto exchanges.
ThePaper.cn added, “After the clean-up and remediation, the trading volume of virtual currencies denominated in renminbi (RMB) dropped from over 90 percent of global trading volume to less than 1 percent at one time, greatly reducing the risk levels.”

https://technode.com/2018/02/05/china-ban-block-cryptocurrency-trading-at-home-abroad/
http://www.thepaper.cn/newsDetail_forward_1983173