Changsheng was watching.
Old Devil Yu knew he only had a blood relation with Ji Changsheng, no emotional bond to speak of.
So, he needed to start working hard now.
First off, now to plant the image of a strong, unbeatable father figure, amplifying Changsheng's admiration and respect for him.
This was crucial.
Because Ji Changsheng's actions have already shocked Old Devil Yu greatly, he even thought to himself once, I should be like him.
Being a father to a brilliant son brings great pressure.
After all, a father must be commanding and authoritative.
Regardless, today, he had to conquer his son's will so teaching him in the future would be easier - even if he couldn't discipline him, it would make Ji Changsheng respect him more in his heart.
Otherwise, he worried that with Ji Changsheng's limitlessly defiant nature, he might not even grant face to his own father.
Thus, Old Devil Yu went all in.