The itinerary will be updated from 8:00-10:00 in the morning.

Every morning at 8-10 am, the data for the previous 14 days will be updated uniformly. The user's itinerary calculation in the previous 14 days is completed in the backend of the operator, and there will be a one-day delay in the results. For example, the itinerary data queried on September 15th is the itinerary data for the 14 days before September 15th (0:00 on September 1st - Between 24:00 on September 14).

Communication big data itinerary card, commonly known as "itinerary code". It is a query service provided free of charge to 1.6 billion mobile phone users across the country by the China Academy of Information and Communications Technology and three basic telecommunications companies, China Telecom, China Mobile and China Unicom, using mobile phone "signaling data" to obtain it from the base station location of the user's mobile phone. Through the service, you can check the information of all the cities that you have visited in the past 14 days.

In September 2021, in order to help people travel safely, the national government service platform integrated the health code and itinerary code into a "one-page view". When you open the Alipay health code, you can see the itinerary code at the same time. This means that the health code and the itinerary code have been fully integrated into one page on one page across the country.