What the subject wants to ask is, what should I do if I lose Tsinghua's admission notice? It can be solved in the following ways:

1. First, contact the University Admissions Office in time and provide other supporting materials.

2. Then go to the local education department to issue a certificate of loss reporting, take part in the college entrance examination that year, and get the certificate after verifying that the information is correct.

Finally, with the certificate, you can enter the university to report.