So far it's Xtremely difficult for foreigners to open an account in Chinese banks.
Shouldn't you be able to open CNY account in a HK bank?
Still hard, for foreigners who are not residents. You need to get an agent to help you. HK still has "KYC" laws which require you to authenticate your identity, etc.
It's very hard. I did it when I ran a private TV torrent site and I wanted to hide the money. I tried many countries, Switzerland, Panama, etc. Took me a year, including some video interviews to open an account in China.