In order to make the epidemic prevention and control work in COVID-19 more scientific and accurate, and meet the needs of integrated prevention and control in the Yangtze River Delta, a unified "Sukang Code" was implemented in the whole province, and people were classified and managed according to different risk levels of red, yellow and green (corresponding to high, medium and low respectively), and mutual recognition was made in the whole province and three provinces and one city in the Yangtze River Delta.
People who enter public places such as institutions, enterprises and institutions (including medical institutions and schools), communities (villages), public transportation, hotels, shopping malls and supermarkets use "Su Kang code" to indicate their health status; Individuals can check each other by showing "Su Kang Code".
The "Sukang Code" has a time stamp, and residents can fill in their health status every day as needed. For residents who do not have the conditions for electronic declaration, the validity period of the paper health card is 14 days after being stamped.