Thick black mist surged up behind Mu Chen, concealing his figure as chains clattered and rattled.
This was a Soul Hall art. Though he did not use it as a combat technique, it was quite convenient for harvesting souls. Both the black mist and the chains possessed an extremely powerful suppressive effect on souls, and this appearance was strong proof of a Soul Hall identity.
Seeing Mu Chen in this state, the Blood Eagle King's pupils contracted, and his expression turned grave.
He looked at Nine Nether and sharply demanded, "You actually dared to collude with the Soul Hall? The contest between the armies under the Nine Kings is an internal dispute. Bringing in an outsider is against the rules, isn't it?"
Although Nine Nether herself felt that he had a point, she could not lose momentum at a time like this. Even without reason, she had to argue herself three parts of one as she spoke coldly.
"How is it against the rules? Mu Chen is a commander of my Nine Nether Palace, so naturally he can represent Nine Nether Palace in battle. As for his other identities outside, are they important? I'm even a member of the Nine Nether Bird clan!"
Mu Chen smiled. "If Your Highness the Blood Eagle King finds my identity as a Soul Hall Protector rather unpleasant to look at, I can go resign today... Of course, I would ask the Blood Eagle King to accompany me as a witness."
I'd have to be insane to go to the Soul Hall with you... The Blood Eagle King cursed inwardly, his gaze toward Mu Chen filled with killing intent.
"Protector Mu, I advise you not to wade into this muddy water. I have heard that if protectors like you meddle in disputes between other factions