[6] Nothing was recorded in history about Cao Ang's early life, except that he was nominated as a xiaolian (civil service candidate) when he reached the age of adulthood (around 19 years old).
[7] In February or March 197, Cao Ang followed his father on a campaign against the warlord Zhang Xiu in Wan (宛; or Wancheng, in present-day Wancheng District, Nanyang, Henan).
[8] Cao Ang could not ride on horseback so he offered his own steed to his father, who managed to escape from Wancheng.
Later that year, Cao Wan was reassigned as a Zhangzi Duke (長子公).
After Cao Wan died, he was posthumously honoured as "Prince Gong of Feng" (豐恭王) and was succeeded by his son, Cao Lian (曹廉).