Who is the king of Yinchuan?

Wu Xie is the king of Yinchuan who took notes on grave robbery in the North School. According to relevant data, Notes on Tomb Robbery is a novel about tomb robbery written by three uncles of Nanpai, which tells the story of Wu Xie, Zhang Qiling, Wu Sansheng and others exploring ancient tombs. According to the setting in the novel, Aza of the Northern School is from Yinchuan.