2. Jin said that the holder has been protected by COVID-19 vaccine.
3, green code: pass by code.
4. Yellow code: quarantine shall be carried out within 7 days, and the health punch for 7 consecutive days (no more than) shall be normally turned into green code.
5. red team: quarantine was implemented for 14 days, and the health clock 14 days normally turned into a green code.