After escaping the Void, Tun Shizhe was wounded enough that he lost consciousness after forcibly escaping from the Void. The hell creatures are immortals in the abyss. They couldn't be killed like elementals as long as their source existed. Moreover, the hell creatures are merciless, and they only listen to the commands of the owner of the Void. Since they can't be killed, he can only eat as much as he can, free himself from their clutches, and make a hole to escape the domain of darkness.
His injuries are now worse than before. At least before, he only needed to heal his hand, and the rest were completely healed. But now it's different; the coercion effect of the void on any existence is too powerful. That's why the sovereign God of Light, Shen Siwang, rarely stays in his brother's domain. As an area filled with all negative existence in the world. It wouldn't affect the evil gods much, but for the other gods, they would be corrupted by it becoming a fallen.