Luggage(Baggage) Regulations for China Domestic Flights:
1. Carry-on baggage: The maximum Carry-on baggage allowance for each economy class passenger is 5kg. First class passengers can have 2 pieces of carry on luggage. All other passengers can carry on only one piece. The size can not exceed 20x40x55cm. Carry on baggage in excess of the limit is subject to an excess baggage fee and must be carried as checked baggage.

2. Check-in Baggage: Adult and children are entitled to a free check-in baggage allowance of 20kg for economy class, 30kg for business class, 40kg for first class, while flying on domestic airlines in China.
No free baggage allowance is granted to infants.
Groups traveling together are able to combine their baggage allowance if they check in together.

3. Prohibited Items: The following items are prohibited and cannot be carried in checked or carry on luggage:- Flammable, explosive, corrosive, poisonous, radioactive, polymerizable and magnetized materials. Passengers are forbidden to carry arms, sharp or lethal weapons during flight.

Children and Infant Air Tickets:
1. For Children (age from 2 years old to 12 years old).
For China domestic flights, Children enjoy Half of Full Prices; when booking a child ticket, please select "Child Ticket" and book it seperately from adult tickets. Remember to provide "Birth Date" information when filling children names and passports, Birth Date is required for "Child Ticket" which must be the same as on the passport.
For example, if your family have child travelling together, you need submit two flight bookings, one for adult(select "Adult Ticket") and one for children(select "Child Ticket").

2. For Infant (age smaller than 2 years old).
Infant must be accompanied with adult when taking flight. Since infant does Not take seat on the plane, infant ticket can be get anytime when you check-in the airport. You do not need to book infant ticket online, please get the infant ticket in the airport when you check-in the airline.
So you just need book adult ticket online in advance, and get your baby ticket in the airport when check-in, infant tickets are always available as they do not occupy seats on the plane.
Infant enjoy 10% of Full Price, one adult can only accompany one baby.