Extension: From the day after the applicant submits the filing information in the system, the applicant can use the filing voucher number fed back by the filing system to submit a patent application and request for fee reduction: when submitting a patent application, just check "Request for Fee Reduction for Qualification Filing and Fee Reduction for Completed Filing" in the patent application request; Where a fee reduction is requested after the filing date, it is necessary to submit a fee reduction request (applicable after the filing date) and fill in the patent fee reduction filing voucher number.