He was practically brought up by his sister.
But human emotions were so strange. The more he cared, the more he could not tolerate the slightest provocation. Not to mention, the person who provoked him was his biological mother.
When Ling Liwei told him for the first time that Zheng Yan did not really like him and treated him well only to confuse him and loosen his guard, which might one day cause him to die, his first reaction was not fear, but disbelief.
He even foolishly ran to Zheng Yan and promised her that he would be obedient and that his sister would not hate him.
However, Ling Liwei kept telling him that as long as Zheng Yan was around, his father would not like him.
Zheng Yan was only nice to him to show off in front of his father.