Hey, there, (Lao Zhang's tips)
Please take 8:00am PCL at downtown, and this PCL will catch 9:00am ferry , then arrive in airport at 11:25am . Pls pay attention NOT late; otherwise, you may not catch CA992 flight, because CA 992 will be clsoed check in counter at 11:50 pm (if CA992 fly at 12:50pm on Feb 27).
You see you arrive at airport at 11:25am , then Air china close check in counter at 11:50am. So, think about it.
So, most people take 6:00am PCL at downtown.