Travel itinerary is used to help users who have returned to work prove the areas they have visited recently. The health code is declared online by citizens or workers who have returned to work after rework, and the personal QR code can be generated after background review.
Travel itinerary includes countries (regions) that residents have visited within 14 days and domestic cities that have stayed for more than 4 hours. Color cards only remind the places to visit, and have nothing to do with health status, and are not colored. According to the data integration of personal health information declared by COVID-19 residents and national epidemic prevention data information, health codes are divided into three categories: red, yellow and green.