Hong Kong gets in-principle agreement to implement reverse quarantine for Guangdong entry:

https://www.bloomberg.com/news/artic...hina-scmp-says

John Lee Hails 'Reverse Quarantine' for Closed-loop HK Isolation to Meet CN '7+3' Rule; GD, SZ Leaders Agree to Form Task Force
https://www.aastocks.com/share/news/....1210825/?l=en

The article does not say whether this reverse quarantine is applicable for non-residents of Hong Kong or Guangdong. If it is, it will be swamped as a tactic for everyone to get back into other parts of China very quickly.