Tool materials: Lenovo Xiao Xin Air 2, Windows 10, Wanxing PDF8.2.20.

1. Open Wanxing PDF software, import the PDF file to be operated, and find and open the "Protection" menu at the top.

2. Find and click "Sign Document".

3. Move the cursor to the area where you want to add a signature, and click the area to pop up a dialog box named "Sign Document".

4. When you use it for the first time, please click the "New ID" button to create a new ID, and use your name, email address, company name, etc.

5. Select the storage location and set the protection password for the input signature file.

6. After creating the digital ID card, it will guide you back to the "Sign Document" window and display your ID card information in the box. Click "Signature" to add your signature to the PDF file.