[answer not specific to CSN]
In previous, standard times lead-in time to "solo" captain was 12-18 months from the day of submitting an application. For long haul probably 18-36 although you become economically useful sooner as a relief PIC in the 18-24 months range.
To cover the crewing needs, or just against the risk of crew shortage, for peak traffic periods
- The National Celebration Day, October 2021
- Spring Festival, February 2022
recruiting needs to start right now.
Since for the moment, there are soon to be 8 (e-i-g-h-t) flights per week between the US and P.R.C., obviously, no recalls are on the daily menu. And the scheduling / recruiting team is in a classical position of damned when they do, damned if they don't.
Impossible to draw any conclusions.