Ask to show your child a travel itinerary card. Children don't have a mobile phone and can't get their own travel itinerary. The guardian can check his itinerary card as a basis.

1. First, open the mobile phone WeChat and click the search logo above.

2. Search and click on the communication route card.

3. Display the communication itinerary card service, and click Get.

4. Finally, check "Agree" and click "Query", so that the bound WeChat mobile phone number will be read for query.