Han Qingshan was ruthless to others, but he was even more ruthless to himself. To lure the snake out from the hole and the tiger away from the mountain, he did not hesitate to sacrifice his own engagement ceremony.
All of this was done with only one purpose. He was going to deal with He Yuyan once and for all.
Even if he had proof of her crazy antics, she would be sent to jail for the majority of her life, but what if she still harbored ruthless thoughts when she came out of the prison, and at that point, pointed it towards his future children? This was a risk that Han Qingshan could not afford.
Hence they allowed the thugs to enter the hall, and he then heard them threaten all the members of the upper class. Clearly, there would be great hostility from these people towards the thugs.
At the same time, Han Qingshan managed to prove his worth, being able to deal with such a group of thugs so quickly, and without anyone being hurt.