You can book cross-boundary coach tickets for children or infants who are in the same booking as the adult. For routes between Hong Kong International Airport and Shenzhen Bay, Shenzhen Kinkey Banner, Shenzhen Huanggang, Shenzhen Liantang and Shenzhen Guangyin Building, passengers do not need to purchase coach tickets for infants who do not occupy a seat. Please refer to the system display for full details.