1. Authenticity verification: In order to prevent forgery and tampering, the education department needs to verify whether the certificate submitted by the applicant is true and valid, and whether it is consistent with the records of relevant examination institutions. Only the original can prove the authenticity of the certificate and ensure the fairness and accuracy of the appraisal.

2. Normative requirements: In order to ensure the fairness and standardization of certification, the education department requires all applicants to provide the original certificate to ensure the consistency, fairness and transparency of certification standards.

To sum up, in order to ensure the fairness and accuracy of certification and the confidentiality requirements of examination institutions, Bazhong needs to provide the original Putonghua certificate for teaching funds.