Why does opening the health code display other areas? Because now is the era of big data. Our mobile phones all have GPS positioning. As long as you bring your mobile phone, no matter where you have been, it will be recorded, especially during the epidemic. It will record all your trips. As long as you have been to this place, opening the health code will show where you have been. You just need to refresh your location, which is the health code of your current location.