System version: Ubuntu 20.04
Open the terminal and enter the command:
export LANG=en_US
xdg-user-dirs-gtk-update
Then a dialog box will pop up, asking whether to change the name of the Chinese folder to English, select 更新名称
Then enter in the terminal again
export LANG=zh_CN
Modification completed:
Reference link: Change the Chinese folder name in the main Ubuntu folder to English