After Cang Yun looked through all the missions on the first floor of the Main Mission Hall once, he had a better understanding of them.

In the first level of the Main Mission Hall, all the missions were further divided into three categories: simple, medium, and difficult.

The main reason for these three difficulties was that the Spirit Beasts in the Returning Ruins had three levels.

Savage Spirit Beast, Great Desolate Spirit Beast, Ancient Spirit Beast. Of these three levels, the strength of the spirit beasts differed greatly. The difficulty of hunting them was different, so naturally, the difficulty of the missions were different as well.

The Savage Spirit Beast was the most common Spirit Beast in the Realm of Eternity. Among the three levels, the Savage Spirit Beast was the weakest, so it was relatively easy to kill. It was classified as a simple mission.

However, it was worth mentioning that this was a relatively simple task. In essence, the savage beasts were extremely powerful. Even if there were many genius disciples in Holy City, it would be very difficult to kill a savage beast of the same level.

In fact, quite a number of disciples died under the claws of the savage beasts every year.

As for killing a savage spirit beast, one could use its corpse to exchange for ten to a hundred different Dragon Marks. This was mainly due to the cultivation of the hunting spirit beast. The higher the cultivation, the greater the value.

Savage Spirit Beasts were all treasures. Their blood essence could be used to refine medicinal pills and their bones could be used to make weapons. Therefore, the bounty offered by the holy city was not low either.

As for the higher level prehistoric and archaic spiritual beasts, their value was naturally greater. However, these two were rarely seen even in the Returning Ruins. Moreover, it was extremely difficult to kill them; there were very few disciples that could complete this type of mission.

And finally, and most importantly.

If one went back to the Ruins of Unbounded Desolation to hunt for spirit beasts, not only could they train themselves, but they could also obtain great benefits after hunting them.

This benefit was mainly focused on hunting the ninth stage of the secret stash of the Wilderness, which was commonly known as the ninth stage of the Wilderness.

Because they were only one step away from the Nihility God Stage, some of the savage beasts had already started to condense the Nihility God's Fragment. These fragments could be used by martial artists. As long as they could kill this type of savage spirit beast and use a special method to absorb the Nihility God's fragments, they would be able to condense the power of the Nihility God.

In other words, as long as a martial artist absorbed these fragments, they would be able to form a Nihility God in advance at the Hidden Realm. And the more they absorbed, the faster the Nihility God was formed and the more complete it was.

The hidden ninth stage was a stage for martial artists. At this stage, the difference in strength was enormous. And the most important factor for such a difference in strength was not only one's own talent, but whether one had a Nihility God condensed or not.

At the stage of the ninth stage of Concealment, those who did not condense a Nihility God could only be considered ordinary ninth stage warriors; those who were condensing a Nihility God were called Great Circle of the Hidden Nine Stage warriors; and those who did not condense a Nihility God were called extreme ninth stage warriors.

In these three stages, the difference in strength between the martial artists was immense, because once a Nihility God was condensed, one could more or less obtain a part of the ability of the Nihility God Stage.

There were even a few peerless geniuses that had the strength to challenge the Nihility God Stage. For example, the Nihility God Stage, Eastern Fox, and the Enlightened Xuan, they were all at the peak of the Hidden Realm. They were far stronger than ordinary people.

Cang Yun's talent was not bad, but compared to these three people, he knew that he was still far off. And this difference was mostly because he had yet to form the Nihility God Stage.

Therefore, he had to return to the Ruins.