Of course, Qin Yuan had long been shaped by Qin Yu's experience, and his ability to speak was strong. You could tell by the way he spoke in front of those teachers. He didn't use any foul language, but his pretentious words had a powerful, intimidating effect.
As a father in society, he knew that to protect his daughter from harm and bullying in school, the most effective way would be to let others know that her dad was fierce, and that their family had money and influence.
So when he went to take the leave form, he deliberately showed off the watch Qin Yu had given him... those teachers must have recognized it.
If they knew the watch, which cost tens of thousands, was bought by his daughter, they would probably be scared to death. Well, he thought, it's better to leave some low-key capital for her.
Of course, he knew that his daughter was super talented and not afraid of those school troubles at all, but he felt it was his duty to protect her.