Migrant workers from other provinces live and work in Guangxi, and the bright code is the Guangxi health code before they can be released. For example, when Anhui workers go to a residential area in Nanning to decorate, it should be Guangxi Wei code instead of Anhui Wei code. Big data will automatically retrieve the health data of Anhui health code, but migrant workers must register Guangxi health code to pass in Guangxi!