Okular, the best pdf reader in Ubuntu, today recommends two pdf readers Okular and Foxit reader for linux. The former is more powerful, the latter is faster to load, and better to support Chinese! So I recommend using these two software in ubuntu !! Www.2cto.com: I recently read a pdf e-book. I read it with wine foxit reader and found that the text overlaps. I thought it was a problem with the PDF itself. Take a look at Windows! It turns out that my PDF reader is faulty. I have been using ubuntu for so long that I did not find a good PDF reader. I have also tried many types before, such as adobe reader (slow startup, resource occupation, and unable to mark), wine foxit reader (the labeling function is always faulty and the color is incorrect), and there are some other types... In short, it is not easy to use. Run www.2cto.com to install okular on the ubuntu software center. If the downloaded pdf file does not support Chinese characters, follow these steps: Enter sudo apt-get install poppler-data in terminal. If not, enter sudo apt-get install poppler-utils again. If the sudo apt-get install poppler-utils still does not work, it may be because some pdf files do not explicitly specify the font, and the system displays the sudo apt-get install poppler-utils, as a result, the Chinese font display failed! Solution: sudo vi/etc/fonts/conf. d/49-sansserif.conf change <edit name = "family" mode = "append_last"> <string> sans-serif </string> </edit> to <edit name = "family" mode = "append_last"> <string> monospace </string> </edit> If the modified font monospace cannot be displayed, you can change it to to display it! Also: do not install the LiHei Pro font. It is really ugly on ubuntu !!!