Wedding ceremony

I attend a wedding of my friend tomorrow. And I am the receptionist at the wedding. I look forward to attending a wedding because I have never met his wife. I hope they will be happy.

But he have to go to China by temporary transfer from April. He have to go China half a month later. It is serious. If I change to same case, I can not decide to go to China. But I think businesspeople can not refuse a temporary transfer.