In regards to that matter, Gu Yi had never told anyone about it.
Betrayed by the person he loved, thinking that he had won the hand of the fair lady, never ever thought that he would turn to become such a joke.
Calculating based on the time that Gu Ying had been born, it was deemed that before the young princess of the Nine Temples married Gu Yi, she was already pregnant. Gu Yi had already become the Blood Fiend Palace Lord at that time and the humiliation caused a drastic change to his personality, but with the Nine Temples behind their little princess, he was unable to avenge the humiliation but acknowledge Gu Ying as a son, and cover up the entire matter.