Hi,
Have you added the language package of Chinese?
Please check the instructions for installing language packs from below link and also take a look at the download from windows web site:
Language packs are available for Windows 8 and for Windows RT
https://support.microsoft.com/en-us/help/2607607/language-packs-are-available-for-windows-8-and-for-windows-rt
Language packs
https://support.microsoft.com/en-us/windows/language-packs-for-windows-a5094319-a92d-18de-5b53-1cfc697cfca8#lptabs=win8&ID0EBBD=Windows_8.1
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Hope this helps and please help to accept as Answer if the response is useful.
Thanks,
Jenny