Originally Posted by Santander

Please help us on which airline you're talking about. There is no such airline as "China Air". There is Air China (CA, main hub in PEK), China Airlines (CI, main hub TPE), China Southern Airlines (CZ, main hub CAN) and China Eastern Airlines (MU, main hub PVG). I assume you're talking about one of the first two. F availability varies by route and CA in particular has many different configurations but generally speaking, F will always be fully flat and C will not be.