According to the regulations on epidemic prevention and control in Yancheng City, if the travel card is marked with an asterisk and the health code is green, if you have a negative nucleic acid test certificate within 48 hours, or can produce a health code including a negative nucleic acid test certificate within 48 hours, and your body temperature is normal, you can flow in an orderly manner under the premise of personal protection. For those who can't provide negative proof of nucleic acid test within 48 hours, nucleic acid test should be carried out, and those with negative nucleic acid test can flow in an orderly manner. If the person lives in Yancheng, it needs to be monitored for 7 days, and the nucleic acid test should be carried out again within 72 hours after entering Yancheng.