In the Chaos Void, the power burst forth by Pei Xuanjing was not only felt by the Lion Emperor alone.
Pei Xuanjing had achieved the Three Proofs on the Immortal Path and, according to him, had progressed even further, undergoing a transformation again. He was no longer on the same level as these True Immortals; he referred to his kind as Profound Immortals.
Thus, when this transcendent power manifested, it wasn't only the Lion Emperor who was shocked; all the True Immortals and Monster Gods of both the human race and the Demon Race who were battling in the Chaos Void felt it too.
This immense power made them feel suffocated and unable to resist; they all instinctively wanted to know what had happened.
Then came the Lion Emperor's roar of anger, which shocked and terrified many True Immortals and Monster Gods. They couldn't imagine what situation the Lion Emperor was facing that could cause such terror.