[SOLVED]How to put chinese content on a multiligal site?

Hello,
I’m working with modx 9.6.3, a french instalation, the snippet MLx, with a charset utf-8.
I’d like to put chineses caracters in the wysiwyg editor but each time all of them are transform like this "<p>????</p>".

I gess I may have few files.inc.php to install, i don’t know...

I hope you’ll be able to help me.
Thanks in advance,
Regards,

After all I found the solution and i"m happy to share it.

You have to change the database to "tuf8-unicode" and all the caracteres are saved in DB in the proper way.
(via advanced modification in Install folder)
I’ll be able to make my Chineese version of my web site.