Originally Posted by Noodlesz

On flights between China and Japan or China and the Americas or Australia, passengers holding adult tickets or children’s tickets may check two pieces of luggage free of charge, each weighing no more than 23 kg (50 pounds), and the maximum size of each piece may not exceed 158 linear cm (62 linear inches). On other international flights, passengers holding adult tickets or children’s tickets may check one piece of luggage free of charge, weighing no more than 23 kg (50 pounds), and the maximum size may not exceed 158 linear cm (62 linear inches).

http://www.airchina.us/en/customerse...Q/baggage.html