1. Open the invoicing software, enter the invoice management module, click Fill in Invoice, and fill in the general VAT invoice. Select the invoice volume and confirm the invoice code to bring up a new general invoice interface.

2. Click on the red letter, enter the code and number of the original blue invoice twice, and then click Next.

3. Then the relevant information of the original blue-ink invoice will pop up. After the inspection, click the "OK" button below.

4. Check the face information and the original blue-ink invoice code number in the remarks column again, click the print button after confirmation, and print it on the new ordinary invoice, and the red-ink invoice of the ordinary invoice is successfully issued.