Luckily, that was Wu Yu's Door to the Ancient Demon Realm.

He knew that no matter where this was, he had been brought here by this treasure.

Hence, this was the most important thing for him to be able to return to his original world.

Wu Yu naturally did not say much but put the Door to the Ancient Demon Realm in his Sumeru Pouch first.

He relaxed slightly after doing that.

"It seems like I can open it every time I drip blood on it and can pass through and back."

He guessed that if he wanted to return, he just needed to drip blood again.

As expected, he could not totally control this extreme treasure of a demon immortal. However, he could use the method of dripping blood to enter the Ancient Demon Realm. This was a pleasant surprise for Wu Yu.

And now he was still deeply shocked.

His Eyes of Fire and Gold looked afar into this world. He saw grand mountains and rivers on land and endless sea waves. He seemed so tiny here. Hence, he could not see that far.

However, he had contact with this world when he first touched the Door to the Ancient Demon Realm. He had seen...