The reason is simple.
"Here, the Undying Spring."
Cui Zhen helped Qilin Miaofa True Monarch up, directly taking one drop of pure white vapor from his brow, and without explanation, he transferred it into the True Monarch's palm.
In this world today.
Cui Zhen is, apart from Xie Xuanyi, the only one who possesses the Undying Spring.
As for Lu Yuzhen, he cannot be counted among them.
He hasn't shown himself in a long time.
Lord Lu may have the Undying Spring, but half his body is immersed in the River of Destiny, unable to freely appear, so he can only be considered an "exception" not bound by rules.
During the battle at the Sealed Domain.
Cui Zhen fought fiercely with the Nether Sea.
In theory, a newly promoted Yang God should not be able to battle the Nether Sea in such a manner...
But alas, Cui Zhen has lived two lifetimes, his "newly promoted" Yang God's combat experience is exceedingly rich.
Plus, he has the Longevity Lamp and the Undying Spring.
