Why is the ticket to Zhuhai so expensive?

Advertising fees of airlines. According to official website's information about air tickets, the reason why air tickets to Zhuhai are so expensive is because of the airline's publicity expenses. Air tickets are a kind of certificate for people to fly. The air ticket is registered in real-name registration system, that is, the person who orders the air ticket needs to provide the real name and ID number of the passenger to the airline or air ticket agency.