I am travelling from islamabad to beijing in august with my wife.

I am on study visa in xian uptil july 2020, bringing my wife on tour visa for honey moon. I want to ask can i join your "tour group" for beijing and xian, and then you leave me and my wife in xian, if possible after complete tour of beijing n xian without shanghai? And what is total cost for two of us. Can you send me detail in email trip n expenses from beijng airport to xian?