Xiapi is the throat of Xu province. Liu Bei and Lü Bu both turned over this ground. After killing Ding Yuan and Dong Zhuo, Lü Bu had no province of his own. Xiapi was the last base.
Cao Cao diverted the Yi and Si. Inside the city Hou Cheng and others bound Chen Gong, and Lü Bu was taken. The long plea at White Gate Tower is the novel. The flood and the strangling are the Records. Diaochan does not appear in the sources for this city.