The health certificate has not expired, so you can reapply. Moreover, health certificates and training certificates can be run together or separately. At the same time, you can participate in training, make a food safety answer sheet, and issue a training certificate when submitting it for approval.
You need to go to the health and epidemic prevention station or the physical examination department of the county-level people's hospital authorized by the Health Bureau to apply for a health certificate. You need to go to the skills training center under the local labor department to apply for a training certificate.