How to solve the issue of Chinese characters not displaying in PDF files generated on Linux?

When generating PDF files in a Linux system, the issue of Chinese characters not displaying is usually caused by the lack of a Chinese font library in the system. To resolve this problem, you can follow the steps below:

1. To install Chinese font libraries, start by installing some Chinese font libraries such as WQY Micro Hei and WQY Micro Heifonts. These font libraries can be installed through package management tools like apt or yum.
2. To set up the font path: Add the installed Chinese font library path to the system font path, which can be achieved by creating a symbolic link in the ~/.fonts directory or by setting the font path in the ~/.fonts.conf file.
3. Regenerate the PDF file: When regenerating the PDF file, make sure to select the correct font and specify the Chinese font.

By following the steps above, you should be able to resolve the issue of Chinese characters not displaying in PDF files generated on Linux systems. If you encounter any other issues, you can try examining the system logs or the output information from relevant software for further troubleshooting.