Cao Cao’s surname was not Cao. In order to curry favor with the eunuchs who were in power in the palace at that time, his own grandfather adopted his father to a father-in-law named Cao. Later, Eunuch Cao gradually developed into a pervert because of his own shortcomings. He renamed everything that belonged to him, and the new names were related to the kind of things he couldn't do. At first, he was relatively secretive. For example, he changed his name from Cao Teng to Cao Tong. Changed Cao Cao's father's name from Cao Song to Cao Song. But after Cao Cao was born, Eunuch Cao became more serious and insisted on naming the child. As a result, Cao Cao was named like this...