What should I do if the Linux graphical interface language setting does not have Chinese characters and the input method does not have Pinyin?

It's very simple, open the terminal and execute the following command:

yum list langpacks-*

You can find the language packs available for download. Chinese is zh. You don’t have to look for it. It’s just at the back.

Download:

The noarch at the back is 64-bit or 32-bit. Noarch means both are applicable
. There is no need to bring noarch because it will automatically match.

Then look at it again, and there will be Chinese
(after selecting Chinese, it will rstart, it is recommended to select both Chinese and input method before logging in again)