Use AdobeAcrobat to convert and download fonts.

This process is to embed (or download) all the font information involved in the file, so that when the client renders the text, it only calls the font information embedded in the file and does not depend on the font of the operating system.

The problem of this method is that the size of PDF file will increase sharply and the operation is complicated. AdobeAcrobat is a paid software, but it can still be downloaded normally on the forum network disk.