CI business--not recommended
I just took the CI C class from Hong Kong to SFO via Tai Pei. The seat is not that good. The aircraft is VERY old. The food is limited. When I wake up during the flight, I asked for something to eat and there is only fast noodle, which is the service the other carriers provide in Y class.
Anyway, the fare is cheap. So you know why the service and seat is not good.