Challenge!

"I am Gui Yun, the guardian of the Principle Sea," the brown-haired elder said.

"Guardian?" Jian Wushuang was puzzled.

"Ruler, every Principle Sea in the universe has a guardian. As for the purpose of this Guardian's existence, I don't know. However, it should be related to the top force behind the creation of the Principle Sea," Devil Flame said softly.

Jian Wushuang understood that the top force in the depths of the universe created the Principle Sea and spread it throughout the universe. It was impossible for the geniuses of the universe to enter it without a purpose.

"If you want to enter the Principle Sea, you must first show whether you have really comprehended a trace of the universe's principles. After all...seeing is believing," said the Guardian, Gui Yun.

"Okay." Jian Wushuang nodded and then waved his hand. A trace of the power of the universe principle instantly condensed in his palm.