The man was still wondering what happened with Void when he sensed the presence of someone else, an unfamiliar aura.
Just as he wanted to turn to look at the figure, he felt his body paralyzed. Not by fear, but by a chilling cold. It was as if his body froze up. When he looked down, that was exactly what happened. His body froze up at a pace he never thought it would. Given his cultivation stage, unless the person is vastly superior to him, there's no way they could freeze him using the ice ability of the water element. But right before his eyes, his body was frozen and he couldn't even think properly since his thoughts were fuzzy.
Grey didn't let such an opportunity go to waste, he attacked, directly crushing the core of the man.