Originally Posted by
brunos
4 hours is good.
If there is some serious ATC delay the CX staff in PEK is quite good at putting pax on earlier flights. Just let them know that you have a CX connection in HKG.
The earlier flights idea is good in theory, but everyone else has the same idea, and once they fill up, they're no longer viable. I think the OP should be okay with for hours, but most of us have experienced very long delays PEK at times.