Cao Cao.
Cao Cao’s nickname is Ah Ma, which is not recorded in the "Three Kingdoms".
This statement was first seen in Pei Songzhi's note in "The Biography of Cao Man": In "The Romance of the Three Kingdoms", Cao Man basically became the nickname of Cao Cao. Cao Cao was born in the troubled times of the Three Kingdoms, but could not become a hero. But a rare hero in history.
As the founder of the Cao Wei regime in the Three Kingdoms, Cao Cao was particularly clever when he was a boy. As an adult, he had the aura of a politician who "sees five thousand years as a plate of water and twenty thousand miles as mud." , in the Haozhou area at that time, the locals believed that a nickname was not only easy to make a living, but also easy to achieve great success.
So many children are named after the age of 12, or given a nickname, so as not to attract the attention of the Lord of Hell and lead to an unfortunate death at an early age.
Cao Cao was called Ah Ma when he was a child, so that Cao Cao could grow up safely and be successful and honor his ancestors.