The yellow health code means that your recent trip is not up to standard and you need to be quarantined for 7 days. You have to continue to punch in for quarantine before it becomes a green code, which means you can travel normally.
The yellow code of health code indicates:/kloc-people from areas with high epidemic risk or people who have been to key areas within 4 days (passing through cities with medium and high risk areas). People in prefecture-level cities with local epidemics and neighboring areas with proliferation risks. People who are abnormal within 14 days in the provincial epidemic database. Patients who were cured and discharged after home observation for less than 14 days. Contact with asymptomatic infected people under medical isolation is less than 14 days. Overseas people who have not completed the quarantine period. Other personnel who need to be included in the management of medium-risk personnel.