Settings -> Advanced -> Language
After the restart, the interface, it becomes so.
This time, when browsing the site in multiple languages, or show Chinese.
Press F12 to open the tools in the Console enter the navigator and press Enter to see, Language value, the original or zh-CN.
So, the first step in the correct operation, not only to set the English language, but also the English language before deleting, reach the English, led by a language requirements . As shown below: