Ya done fucked up, Azure Feather. If you're going to pick a fight and you know the other side won't back down, you need to strike first and strike hard.
This also goes back to something I said earlier, about Azure Feather finding themselves alone. I understand not wanting to get too involved with Liang Yu and Dark Moon, but realpolitik dictates that the smart thing to do would have been to make a defensive alliance; one will go to the other's aid if and only if they are attacked without provocation.
In this scenario, Liang Yu would try to weasel out of it with legal speak, but it wouldn't be too hard to nail him down and make him commit.