PeachBlossomGoddess:
The question is what is KJP's end game? Both the Commander Xue Yue and the Japanese are waiting for the intel from him. Will he tell Xue Yue the Japanese are coming from the West (fake) or the East?
Boils down to his identity, I guess. For me, I see three possibilities :
If he's Japanese, then its Patriotism. If he's Chinese, its Money.
Last one is Revenge on whoever who killed WYM (and possibly - his) family.
p.s: I still cannot unsee the Uncle Yang likeness on the Kunwu church dude.