legal ground
Article 31 of the Administrative Reconsideration Law
The administrative reconsideration organ shall make an administrative reconsideration decision within 60 days from the date of accepting the application; However, the time limit for administrative reconsideration prescribed by law is less than 60 days. If the situation is complicated and it is impossible to make an administrative reconsideration decision within the prescribed time limit, it may be appropriately extended with the approval of the person in charge of the administrative reconsideration organ, and the applicant and the respondent shall be informed; However, the extension period shall not exceed 30 days at most. When making a decision on administrative reconsideration, the administrative reconsideration organ shall make a written decision on administrative reconsideration and affix its seal. Once the administrative reconsideration decision is served, it will take legal effect.