Shanghai Haichang Ocean Park children's tickets can be entered by following the following steps:
1. Bring a valid form of identification (ID card, passport, etc.) to the park ticket office to purchase tickets, or purchase tickets on the official Buy Tickets mobile app.
2. Enter the child's ID card number, make sure the child's age is between 1.0 meters (inclusive) and 1.4 meters (inclusive), and select the child ticket.
3. Once the purchase is successful, take the child to the park counter with their ID card. The ticket inspector will check the child's ticket. Once the purchase is successful, you will be able to enter the park.