Chapter 4527: Upgrade

Within the Sect Master's Palace.

Jian Wushuang sat cross-legged on the Eight Trigrams Yin Yang Formation, his eyes flickering.

"It seems that the second Great Catastrophe is about to begin. I have to increase my power one more time before it begins."

Jian Wushuang took a deep breath and muttered to himself.

Although Jian Wushuang had never experienced the terror of the Great Catastrophe War, he had heard about it from Cosmos Gods and the others.

The tragedy of this Great Catastrophe simply could not be described with words.

In the Great Catastrophe, Supreme martial artists were like ants. They could die with a flip of their hands. Only Top Supreme realm martial artists could barely protect themselves.

That was the stage for the Invincible Supremes!

Only an Invincible Supreme would be able to slaughter his way through the Great Catastrophe without fear.

However, even an Invincible Supreme was in danger of dying.