Shenzhen’s zero-Covid management system has been integrated into online maps of the city. Searching for “Shangsha Village” on my Gaode Map app (高德地图). On the map, three classes of lockdown have been clearly marked in a modified traffic light system. Red is for Locked down, no entry no exit (封 不进不出); Orange is for Control, only entries no exits (管 只进不出), and; Yellow is for Prevention a corona test is necessary for entries and exits (出入需核算).