Zhou Heng had many trump cards, but he didn't want to reveal them all at once.
Two Tribulations Quasi-Immortals were very powerful, extremely so, and if these four old monsters really wanted to flee, he could at most keep two of them. He couldn't guarantee whether these four old monsters had Galaxy-level Flying Artifacts and Temporal Origin Liquid prepared, ready to seal themselves off and flee to another planet after their realm had fallen.
Therefore, Zhou Heng had to force them into a corner where they had no retreat and could only fight to the death.
Now these four old monsters had finally reached the edge of a cliff!
But a cornered dog will leap over a wall, let alone the dignified Three Tribulations Quasi-Immortals!
The four old monsters joined forces, stirring up the heavens full of stars, bombarding Zhou Heng relentlessly while reaching for the Star Core.
