What Koning wanted to say wasn't just that Lord Kong Se had made mistakes in that incident.
Yes, it was only a mistake: killing someone and getting caught on camera.
Neither Koning nor Celestial Sound, deep down, believed Kong Se was wrong for killing; the only mistake was getting found out.
Including the things Kong Se said—though they don't fit mainstream values, who doesn't think that way in their heart?
His mistake was in saying it out loud, so of course people would accuse him of being dishonest.
Koning brought up the past not just to ease her mood, but also to test her.
Seeing she hadn't been blinded by rage, he tossed out new information to grab Celestial Sound's attention.
"Back then, there were also some people and forces on Qingsha who were indulging Marriott in going after your uncle."
"Then just say that straight, wouldn't that do?" Celestial Sound actually snapped at a Supreme.
