Lin Zhen hadn't expected the Lord of Fear to be able to escape in such a situation, leaving him somewhat caught off guard.
The opponent clearly had some secret technique or tool, Lin Zhen had sealed off the sky, but failed to seal the ground.
"Beast King Prison... I should check it out when I have a chance."
It's one of the Three Great Forbidden Areas of the universe, along with Star Sea and Dark Light Realm.
However, Lin Zhen probably had no way to go there now. After the Lord of Fear escaped, Lin Zhen clearly felt a surge of Space Power outside of Divine Mountain.
He had felt this power before, it was the transportation triggered by Guxing Diaosou that had teleported away Andromandis in the past.
Clearly, Guxing Diaosou had given Lin Zhen some leeway, not teleporting him away the moment he broke through to the God King level, but instead giving him some time for revenge.
