Cao Ang () ( 177 – February or March 197), courtesy name Zixiu, was the eldest son of Cao Cao, a warlord who rose to power towards the end of the Han dynasty and laid the foundation of the state of Cao Wei in the Three Kingdoms period of China. He was killed at the Battle of Wancheng in 197. Life Cao Ang was the first son of Cao Cao and his concubine Lady Liu (劉夫人). Lady Liu also bore Cao Cao another son, Cao Shuo (曹鑠), and a daughter, Grand Princess Qinghe (清河長公主). However, as Lady Liu died early, Cao Ang was raised by Cao Cao's first official spouse, Lady Ding (丁夫人), who treated Cao Ang as though he was her real son. 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). 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). Zhang Xiu surrendered initially, but rebelled later, launched a surprise attack on Cao Cao and caught him completely off guard. Cao Cao was injured in the right arm by a stray arrow during the battle while his horse, Jueying (絕影), was hit in the neck and leg. Cao Ang could not ride on horseback so he offered his own steed to his father, who managed to escape from Wancheng. Cao Ang died in the battle. Post-mortem events and succession Lady Ding wept often on Cao Ang's death and accused Cao Cao of getting Cao Ang killed and not thinking of him. Cao Cao became angry and sent her back to her family in the hope she might change her mind but when he went to see her around 200, she refused to speak to him so he agreed to a divorce. After her death and when Cao Cao was unwell, he wondered how he could face Cao Ang's spirit if Ang asked about Lady Ding. In 221, after Cao Pi (another of Cao Cao's sons) ended the Han dynasty and established the state of Cao Wei (which marked the start of the Three Kingdoms period), he granted Cao Ang the posthumous title "Duke Dao of Feng" (豐悼公). Three years later, Cao Ang was posthumously elevated