alhh on "How to display Chinese wordings in Title Field?"

Hi all, I faced the problem in displaying Chinese wordings for the field of Title in Posts but for the rest it works.
I really appreciate if anyone can give me suggestions. Thank you.

May be the world doesn't have text-domain that's you are unable to translate it. Post your site address kindly

I'm sorry because I cannot share the site address. But, can you kindly explain to me what is text-domain and where I can find it in wordpress?

Thank you.