What is the submission certificate of Jining for the record?

The certificate submitted by Jining for the record is a negative certificate of 48-hour nucleic acid detection. According to the relevant information, you need to go to Jining on WeChat "Healthy Jining Service Number", click "Convenience Service", select "Jining Report" to enter, fill in the information, and submit a negative certificate of 48 hours nucleic acid test.