Which language to use to test it?

We are usinh supplement chinese, ZH during our logon. This is to allow for Chinese + English to be view when login in ZH.

Now, we are on trial with UNICODE conversion.

My database import had been completed. From here, do I still need to login and test the system using "ZH" or "EN"?

I was told to test the system with ZH. if I continue to use "ZH", what's the purpose of this conversion? I am confused.

Can someone advice?

Thanks