Li Yun had guessed right.
This Heavenly Human martial artist he had stumbled upon, who was using a mysterious stealth art, was indeed from the Heaven and Earth Tower.
Not only was he from the Heaven and Earth Tower, he was also a Heaven Scout from the Heaven and Earth Tower's White Emperor City Branch.
In truth, the Heaven and Earth Tower's core forces were mainly divided into the Heaven Division and the Earth Division. That was the true origin of the words "Heaven and Earth" in its name.
To enter either the Heaven Division or the Earth Division, one needed not only a clean background that met the Heaven and Earth Tower's review standards, but also to pass the Heaven and Earth Tower's test and cultivate its most important Secret Art—the Heaven Earth Stealth Art.
This Secret Art was extremely strange.
It belonged neither to martial arts nor to Divine Abilities.
It was a rather obscure kind of strange art.
Through the cultivation of certain special methods, anyone who successfully mastered this strange art could slip into the cracks between heaven and earth, using the peculiar nature of those spatial cracks to conceal themselves and move in stealth.
It was precisely by relying on this Secret Art that the Heaven and Earth Tower could travel everywhere without restraint and uncover all kinds of hidden information.
However, this Secret Art was not omnipotent.
Once martial artists reached the Heavenly Human Realm, the unity of man and heaven became as commonplace as eating and drinking. Their perception of heaven and earth was exceptionally sharp, and the higher their realm, the keener it became.
The Heaven and Earth Tower's people could use their Secret Art to hide and travel through the cracks of space, but naturally, experts with overwhelming perception could still