sentences:  Lady Lou and her children (Gao Cheng and a daughter) fled as well, riding a cow.During this flight, Gao Cheng repeatedly fell off the cow, and Gao Huan considered killing him with an arrow, but Duan repeatedly saved him.The next known incident involving Gao Cheng was in 531, when Gao, then a Northern Wei general, rebelled against the members of Erzhu Rong's clan (who had dominated the political scene after they defeated Emperor Xiaozhuang in revenge of Emperor Xiaozhuang's killing of Erzhu Rong), and when an agrarian rebel leader, Gao Aocao (高敖曹), a very distant relative of Gao Huan's, refused to follow Gao Huan, Gao Huan sent Gao Cheng to visit Gao Aocao and showing respect due a granduncle, persuading Gao Aocao of Gao Huan's sincerity.