Our big data travel card service uses base station data, and the signals of the base stations in the two places at the junction of administrative divisions may cross-cover communication, sometimes covering blind areas, and there is a situation that Health Treasure cannot be imported into Hebei Province.
Beijing "Health Treasure" applet is a small tool for individuals to inquire about health status related to epidemic prevention. You can search for the "Beijing Health Treasure" applet through WeChat and Alipay to check your health status. The query results can be used as a reference for your health status related to epidemic prevention in scenes such as returning to work and going in and out of public places.