Mi Control Hi

Dear All,
i am trying to switch between servers Europe to China because Europe is not support my Yeelight LED Ceiling light 450.
when i try to add the Mi control Hi with the China server it shows failed to initilise device.
my mi hub works only with Hong kong Gateway.
i am using IOS for this, i hope one can help me as this is not working for me really.

I am trying to understand, if i can add the Bulb to yeelight and manage it from the Mii Home app.
i hope someone can help me getting this set up