The miserable state of his father-in-law, Cheng Chuming, Su Shangmo, and the others was right before his eyes.
Previously, Saint Su City had not been entirely powerless. The Saint Bone Families had troops in the Dragon Flame Kingdom. If they had united, they might not have lost to Vice Commander Liu and his men.
Although Vice Commander Liu possessed a Moon Mortal Bone, his cultivation was only at the Creation Realm. He wasn't terrifying like Mo Jing, who could suppress a massive army. But it was precisely because of the meddling of Elder Lady Su and the others that Su Shangmo and his group were now being brutally tormented.
How could Lu Chao possibly spare them?
Furthermore, the Dragon Flame Kingdom had long ago notified the Saint Bone Su Family that the terrifying threat of the Cyan Sword Great Empire was about to descend. Yet, the moment they heard "Cyan Sword Great Empire," Elder Lady Su and her ilk had thrown open the city gates and let them in.
