Travel itinerary code can be queried on WeChat. Travel code query method: 1. Open WeChat, click "Discover", and then click the search box above. 2. Then enter "the State Council Client" and click to enter the applet. 3. After entering the the State Council client applet, click "Epidemic Prevention Travel Card". Finally, enter your mobile phone number and click Query. 5. Wait a moment, and you can generate the trip code. The travel code is a health code. "Travel Code" can display the information of countries (regions) that users have visited in the past 14 days and cities that have stayed in China for more than 4 hours, and can be used to prove whether the person has been to key epidemic areas and countries in the past 14 days.