Liu Chengyou
Cao Bin's father Cao Yun () was a military commander of Chengde Commandery (成德軍; centered in modern Zhengding County, Hebei) under the Later Han. Before the age of 20, Cao Bin served under his father as a minor general, and Wu Xingde (), the military governor of Chengde Commandery, was reportedly very impressed by him. At that time his maternal aunt Lady Zhang () was married to Guo Wei, another military governor. In 950, she was killed by Later Han emperor Liu Chengyou as Guo rebelled. Guo eventually overthrew Later Han to found the Later Zhou.