Yuan had instigated Shi Yan to make him persuade Zi Yao to fight back against Hui. He had planned very carefully since he knew that Hui wasn't weaker than him.
Zi Yao's soul attacking Hui affected Hui greatly. So did the power of the Power Upanishad Symbol Tower.
Shi Yan's pressure could only help in subduing Hui.
Among Hui, Zi Yao, and Shi Yan, Hui was the biggest threat to Yuan. Yuan had planned a lot of things to subdue Hui. That's how he could achieve what he wanted.
Neptune's team came to rob the Power Upanishad Symbol Tower. They would help Hui escape, which would ruin his entire plan.
Of course, he couldn't allow them!
"Go away! As far as possible!"
Yuan Zu's real body still pressured Forefather Dragon Lizard. The giant turtle moved over and pulled the ocean in the galaxy with it, using the black water to cover the scorching lava pond.
Dragon Lizard had to struggle harder.