1.Only one item (either a passenger's first name OR last name OR ID number) may be changed per ticket. Only five digits or fewer in the ID number may be changed. 2.Any name or ID changes will incur a fee of 50 RMB per ticket (including both single and return tickets), and each ticket may only be changed once. 3.If an entirely different passenger wishes to use the ticket, then the regulations for an involuntary refund shall apply.