For example, if you go somewhere else and the person concerned is still at home, yours will be displayed elsewhere, but his won't.
Health codes do not need to be updated every day. Health code is a personal code. Your vaccination and nucleic acid test will be updated automatically every day. Thanks to the National Data Processing Center, as long as you swipe your health code and travel code every day, your mobile phone will automatically display your health status in real time, and you will know where you have been all over the country, when you have been there, and whether you have passed by or stayed in 14 days.