1. First, open Ctrip, click "Group Purchase" and select the classification of Nezha Happy World in the interface.

2. Secondly, enter the interface to select the goods to be purchased, and click "Group Now" at the bottom right.

3. Then fill in the purchase quantity and mobile phone number in the order interface, click Next, select the payment method, and click Enter.

4. Finally, select a savings card, click to enter the payment interface, fill in the card number, reserved mobile phone number and verification code, and click "Pay".