Qin Ye and Tezcatlipoca got onto the deck and looked out at the cold and forbidding sea before them.

The Caribbean Sea's climate was warm and pleasant all year round, yet they felt as if they had just sailed into the Arctic Ocean. However, there were no visible changes to the sea.

It was as if the mortal realm and the underworld were separated by an invisible line, and they had just crossed that line.

"The Yin energy here is extremely strong." Qin Ye was looking out at the sea with a wary expression. The surface of the sea here was such a dark blue color that it was almost black, and he could see that this dark color was coming from the Yin energy that had accumulated within the water over the past several thousand years!

Furthermore, there was no end in sight to this darkness.

"This Yin energy has already been here for a long time." He reached out before casually making a grabbing motion, and wisps of Yin energy surged toward his fingertips. He then carefully examined the Yin energy before concluding, "It has no conscious will, which means that it doesn't belong to anything."

"This is Cipactli's Yin energy," Tezcatlipoca said with a cold smile. "There's...