If Duan Fei's guess was not wrong, then this kind of mutation should have appeared for the first time in the Nine Dead Towers, otherwise, there were so many predecessors and sages who had entered the Nine Dead Towers, and there was no record of it being impossible to be related to it at all.

The Heavenly Demon Sect has been controlling the Nine Dead Towers for more than 10,000 years, which seems to be extremely long, but in fact, the so-called 10,000 years may be just a flick of a finger for a higher-level world?

I don't know how many years the Nine Dead Towers have existed in the Kyushu world, and once an unprecedented change occurs, it is very likely to have an extremely far-reaching impact on the entire Kyushu world.

Of course, even if there is a real change, it is not something that can see obvious effects in a short period of time, if it really involves a major event that affects the entire world, it is not something that Duan Fei can influence now, after all, his small arms and legs are not so powerful.

So Duan Fei continued to slowly retreat, and he could feel that the invisible figure was the same as him, as if he was afraid, and it also slowly retreated.

Once a certain distance was opened, Duan Fei and the invisible figure could not sense each other's existence, which made Duan Fei's heart feel a lot more settled.

It was also at this time that Duan Fei heard a strange sound of "coo, coo", and then he looked in the direction from which the sound came from, and could see that there were at least seven or eight black pipes that transported energy, which suddenly swelled up, as if the leather pipes were suddenly filled with water, almost expanding to the extreme.

Sections of energy are transmitted along the pipe, making the energy pipeline look like a sausage cut into one after another from a distance, and the sound of "coo, coo" is the sound of energy flowing in the pipe.

In an instant, so much energy poured into the black cocoon, but the black cocoon didn't change too much, and it still beat every dozens of breaths.

Duan Fei looked at the extension direction of these pipes that transported energy, which came from the battlefield of the great melee between the giant ape and the one-horned rhinoceros.

It seems that no matter what the outcome of this battle is, no matter whether there are more demon beasts flowing in a river of blood, there will be no waste of energy in the end, but will converge on the black giant cocoon.

But after absorbing so much energy, the black cocoon still has no change, it is really hard to imagine how much energy this black cocoon has to absorb before it can hatch?

While Duan Fei was jealous, he retreated back along the same path, and after a while, he came to the battlefield where the giant ape and the one-horned rhinoceros were engaged in a big melee.

But what Duan Fei didn't expect was that the scene he thought about was like what it looked like after the war?

Originally, it was a big melee between thousands of giant apes and one-horned rhinoceros, even if it was not as exaggerated as a river of blood, but the corpses everywhere, as well as the big pits smashed out, the toppled trees, etc., were enough to form an extremely chaotic battlefield.

But now, it seems that everything has returned to its original state, and the withered trees have now regained their vitality and are re-erected on the periphery of the forest, so that the whole forest still looks so lush and vibrant from a distance.

On the other hand, there are large black cocoons hanging one after another on the trees in the back row, which seem to be able to absorb nutrients through these large trees full of life, and then hatch them.

The bloodstains on the ground, as well as the corpses of countless demon beasts, and the broken trees, were all gone, as if the previous great battle had never happened at all.

So many demon beasts were fighting together, and the scope of the impact was more than ten miles wide, and Duan Fei also saw the intensity of the confrontation at that time, who knew that now there were no traces that were too obvious, how did such a change happen?

If all this is related to the black giant cocoon in the forest, then the high-end of this thing is far beyond Duan Fei's imagination!

Duan Fei frowned and pondered for a moment, then jumped up violently, and the Fire Sword and Ice Blue Sword in his hand were sacrificed at the same time, and crossed towards a black cocoon hanging from the tree.

The black cocoon hanging on the tree was naturally different from the black giant cocoon in the forest, and as Duan Fei swung his sword and slashed over, it was suddenly cut open from the middle, and a large ball of flesh and blood inside fell from the air.

Duan Fei could see very clearly that this bloody and fleshy thing was actually formed after the giant ape and the one-horned rhinoceros were fused together, and it looked too terrifying.

These two demon beasts are all genuine flesh and blood, but at this moment, they are like melted plastic, and there is no so-called difference between flesh and bones, but they are completely pinched together like pinching mud.

Of course, this is just the form of the cocoon when it is just formed, and no one knows what the black cocoon will be when it really hatches and takes shape, and finally breaks out of the cocoon.

It is conceivable that it is likely that the black cocoon will emerge as an entirely new species, with the characteristics of both a great ape and a one-horned rhinoceros.

If all the shortcomings can be masked, and only the many advantages of the great ape and the one-horned rhinoceros can be combined, then the new species can undoubtedly be regarded as a perfect evolution!

If evolution is successful in this way, then the effect of this evolution is as if the most perfect genetic technology has been mastered, and the best side of the species can be fully revealed.

What kind of existence has such ability? If all this originated from the black cocoon in the forest, could it be the creator who hatched in the cocoon at this time?

No matter what the abnormal change in front of him was, it was obviously beyond the scope that Duan Fei could deal with, if Duan Fei had to get involved in it without knowing how to do it, then there would be no big difference between the end and the initiative to die.

Fortunately, Duan Fei was very self-aware, and he also knew that it would take a long time for the black giant cocoon in the forest to really hatch, and whether anyone else would find out about it at that time, or whether it would alarm a strong person with a higher cultivation realm, was uncertain at the moment.

With Duan Fei's personal strength, it was impossible for him to resist such a big thing, and the wisest thing to do now was to wait and see what happened.

So Duan Fei specially marked the location of this forest, and then honestly walked around the forest, and after spending most of the day, he could be regarded as leaving this strange forest far behind.