While the option to change a language in QuickBooks Online is unavailable, you can run a report and change your browser's language into Chinese. You can also export the report and then change your device language settings.
Let me show you how to change the language in your browser:
Click the three dots at the upper-right of the browser.
From the left menu, click Advanced and click Language.
Add Chinese as a language.
Then refresh the report and try to translate it into Chinese.
If you have othe questions, you can always mention me in your reply. Take care!