How do children provide proof of travel trajectory?

Children should also have green health codes and travel codes, so as long as they have green travel codes, line codes and codes, they can also provide proof of travel trajectory.

If you use a mobile card, as a domestic mobile user, you can directly edit the short message "CXMYD" and send it to 10086, and then we will reply to the last four digits of your ID card according to the information prompts, so that you can find your personal trajectory roaming.

If you use a telecom card, as a China telecom user, you can directly edit the short message "last four digits of CXMYD# ID card" and send it to 1000 1, and then reply "Y" to authorize "roaming place inquiry", so that you can find out your personal trajectory roaming.

If you use Unicom card, as a user of China Unicom, you can directly edit the short message "the last four digits of CXMYD# ID card" and send it to 100 10, so that you can find out your personal trajectory roaming.