o tell Zhao Xuanji what he knows.""To illustrate, we assign the four people numbers one through four. If Zhao Xuanji knows which number corresponds to a specific person, then he'll know who the ghost...ed his head to look at Zhao Qinglan, and said with a smile that wasn't quite a smile, "You don't seem to be in a good mood today""The prince's wedding, how could I not be happy Very good." Zhao Qingla...