What does it mean to report a health certificate to a sojourner?

The report of a healthy punch-in traveler is a self-declaration of whereabouts. According to the public information of relevant inquiries, residence and travel information, referred to as stay history, refers to countries and regions that have stayed or visited in the past 14 days. The purpose of health punching is to grasp everyone's dynamics in real time, understand their health status, collect effective data and provide basis for decision-making.