There are four reasons:
1, no nucleic acid.
2. The nucleic acid has failed.
3. The health code is red team.
4. The health code is yellow.
If the red word "No Entry into Public Places" appears, please don't enter public places, and wait on the spot, and actively cooperate with the contact area of public place management personnel and the municipal epidemic prevention and control headquarters to do the follow-up work. Those who refuse to obey without justifiable reasons will be dealt with severely in accordance with relevant laws and regulations.