It is much trickier to deal with a demon of the Middle Kingdom than an American devil, because you always know that the American devil means you harm. (1.35)
There was reason to worry, too, for just a few years ago, the demons had broken their own laws and turned away over twenty thousand of their former guests who had expected to be readmitted. This figure does not even reflect the large number of Tang men who could not get into the country for the first time. The demons, it seemed were determined to cut down on the number of Tang people living on the Golden Mountain. (1.38)
He was my father and yet he was a stranger to me. I had never seen him.
I thought to myself, How can we ever speak to one another? He's as strange to me as a demon. (1.47-48)