Liu Ying harbors deep hatred towards Cao Jun, feeling that he bears significant responsibility for her current unfortunate life.
Seeing her so united in indignation, Chen Feng felt somewhat strange.
Back then, Liu Ying misunderstood him and wronged him, twice losing her temper at him—once in private, once in front of the class, causing him great embarrassment.
Defending himself was futile at the time, though annoyed, Chen Feng could only endure it quietly.
Later, he discovered that the mastermind behind this ordeal was Cao Jun, and directly confronted him in class, leading to a major argument that exposed Cao Jun's insidious nature to everyone, causing him to lose face in the class.
At that time, Liu Ying, as a classmate, naturally realized that she had wronged Chen Feng. She should have apologized to Chen Feng immediately, but she did not do so until they graduated four years later, never once apologizing to him.