After being away for three or four years, she returned to her old place just to win him back. It turns out that there was already another sweetheart beside him. She didn't believe it, she still remembered the past between him and her. She came back just to pay for his years of suffering and to make him happy. She resented his old friend's changeable heart, and she also resented him for being replaced by a new person. She always thought that happiness could only be given to him by her, but she forgot that time had long ago changed, and things and people had changed.