Chen Gong
Along the journey, they passed by the house of Lü Boshe, a sworn brother of Cao Cao's father. There, they killed Lü Boshe's family by mistake, while Cao Cao personally murdered Lü in cold blood later. Chen Gong was shocked by what he witnessed. That night, as Cao Cao slept, Chen Gong considered killing him, but thought it unrighteous to do so. He instead left Cao Cao and travelled to his own hometown of in Dong Commandery (東郡; near present-day Puyang, Henan).