The two of them held the map in their hands as they walked slowly in the direction indicated by the map.

The map manual that Cang Yun bought was very thick, but the map recorded within was not that big. It only recorded a portion of the locations on the outskirts of the Ruins.

As for the rest of the records, there were all kinds of spirit beasts, including savage, desolate, and even ancient spirit beasts.

With this diagram book, the two of them would be able to familiarize themselves with every kind of spirit beast they could see, and learn their strength, habits, and weaknesses.

This was extremely important. If one knew themselves and knew their opponents well, then it would be a lot easier to deal with the weakness of the spirit beasts in battle.

Especially to Cang Yue, she did not have much combat experience, and it was very possible for various kinds of mistakes to occur during a battle. However, once she understood the habits of these spirit beasts, she could avoid danger at the minimum cost when an error occurred.

Therefore, Cang Yun also told Cang Yue to remember these things carefully, and for this, Cang Yue also did her best.

After travelling for half a day, the two of them finally arrived at the outer edge of the Returning Ruins.

As far as the eye could see, it was a vast and desolate land. Even at the edge of the land, the two of them could still feel the ancient aura emanating from it.

At the same time, Cang Yun also felt an extremely dense fluctuation of source energy. The concentration of source energy in the Guiyi Marquis's body was even higher than that of the Holy City, but the source energy here was filled with a violent and tyrannical aura, which was not something an ordinary martial artist could absorb.

Otherwise, this place would be an even better cultivation holy land than the holy city.

"No wonder there are all kinds of powerful spirit beasts in the Returning Ruins.

Cang Yun mumbled to himself. With such a dense source energy, it was not surprising that the spirit beasts were strong.

Compared to human martial artists, spirit beasts could absorb violent source energy much more easily. But, the stronger the bloodline of spirit beasts, the faster their absorption speed would be. Therefore, in the Returning Ruins, the strength of the spiritual beasts of the Wilderness, the Great Desolate Spirit, and the Primordial Spirit Beast differed greatly.

Standing on this piece of land, Cang Yun's heart was filled with emotions. He didn't know how long the Returning World had existed for, or how many secret treasures were born from ancient times, or how many geniuses were buried here …

And today, Cang Yun was going to use his own two feet to explore this land.

After returning to the dust, Cang Yun did not stop. Instead, he quickened his pace and headed in the direction indicated by the map.

"Returning to the Sea of Fire, where are we going?"

Cang Yue followed in Cang Yun's direction, and after comparing the maps, she guessed Cang Yun's target.

Cang Yun nodded.

The Sea of Flames of the Returned Ruins was an extremely famous place within the dust. Legend has it that the skeleton of a Fire Dragon was buried deep within that land, and after a while, it became a sea of fire.

It was a pity that it had already been extinct since ancient times, and no one had ever seen a real Fire Dragon in countless years. The Fire Dragon's skeleton from the legends of the Returning to the Ruins of Fire was also one of the few places that had anything to do with Fire Dragons.

However, legends were legends after all, and their authenticity had yet to be confirmed. For countless years, there had been many people who had ventured into the depths of the sea of flames to search for the skeleton of the Fire Dragon, hoping to obtain a great opportunity.

However, in the end, without exception, everyone returned empty-handed. In fact, there were even many that died within the sea of flames. Over time, no one brought it up again.