Peizhi was very upset and angry because he was not informed of October's relationship with Lexus. When did she have a relationship with the Song Family? Were the two already in a relationship at that time during his son's birthday? How could October hide this important matter to him? If she said that before, he would not have neglected her for these years.
In addition to that, Peizhi not the one escorting October in the aisle was a clear attack to humiliate him.
What was the meaning of this? This was such an embarrassment for him as her father. The Song family will see him as such a vicious father. The whole City D will got wind of this.