The scandalous incident between Cao Qinghai and Du Huarong happened shortly after Du Huarong married Cao Qinghua.
That night, Cao Qinghai drank too much and developed evil thoughts towards Du Huarong. Taking advantage of Cao Qinghua being out to attend to the matter of his illegitimate daughter, Cao Qinghai directly broke into Du Huarong's room and committed an act of force.
At that time, Du Huarong was angry with Cao Qinghua for having an illegitimate daughter with another woman, who was flirtatious to the core. She didn't publicize this matter, but over time, she and Cao Qinghai frequently engaged in relations, until one careless incident occurred and Du Huarong became pregnant.
However, Du Huarong couldn't bear to abort the child, so she pretended to be pregnant with Cao Qinghua's son.
Moreover, Cao Qinghai didn't have a son, and he was tired of his wife, preferring the passion he experienced every time with Du Huarong. The matter stayed hidden for over twenty years!
