Although the Twelve Palaces were not harmonious deep at heart, but on the surface, they still took care to put on a superficial show of cohesion. It wasn't that there was no infighting behind the scenes, but despite fighting to one up each other, they all knew better than to invite gossip. At the very least, none would so blatantly send the chief culprit right up to the victim's birthday celebration!
Wouldn't that just be spurning others?
From what the Pure Grace Palace knew, Fei Yan's actions in the incident was almost certainly the Dragon Slayers Palace's idea.
With Fei Yan's arrival at this moment, it just made the people from the Pure Grace Palace feel that the Dragon Slayers Palace had gone overboard in their bullying.
But as their were too many other guests around, they did not think it right to openly go against them, so they could only stiffly smile and stand there to stare at Fei Yan.