I want to add new Japan Movie: https://www.themoviedb.org/movie/new?language=ja-JP But it notice me that:

Checking the overview language...

There Were Some Validation Errors The validation failed because:

概述 We had trouble validating the language of the overview field. We detected it as Japanese but expected it to be Mandarin.

Here's a few tips to get things working like we expect:

Try entering more text. Google Translate can have issues detecting the correct language without much text to analyze. We use Google Translate which means you can play with the detection live on the Google Translate website. Click here to edit your text live. Google Translate is still not 100% perfect. If you continue to have problems, stop by the forums and let us know.