It was not the first time war broke out between the Insects and the Humans, hence they knew each other's abilities very much.

The Big Poisonous Fog Formation that was formed by the 3 insect Venerable Ones and the followers was by no means insignificant, and it was also their greatest trick to break through the Big Mountain-guarding Formation.

According to the 3 insect Venerable Ones' estimation, the poisonous fog that had been gathered could already affect the big formation seriously. Although it would not be able to make the whole formation crumble, it had at least surpassed the formation's usual withstandable limit.

At this time, Yuqi the Venerable One should be using a special technique, which was normally accumulated, to deal with the poisonous fog.

Needless to say, during the process, the Big Mountain-guarding Formation's defensive power would constantly be weakened, and the 3 insect Venerable Ones would help intensify the circulation of the poisonous gases.

Once both parties were in a stalemate until a certain level, the Big Mountain-guarding Formation would only be able to protect but not attack anymore. At that time, the Insects would have the upper hand, and the 3 Venerable Ones would be able to fight Yuqi the Venerable One, who would not be able to attack using the formation's power anymore.

Nonetheless, there was a prerequisite to the above, by which the poisonous fog must constantly weaken the Big Mountain-guarding Formation until its mightiness was reduced to the lowest limit.

Seeing as the poisonous fog's intensity was continuously fluctuating, the 3 insect Venerable Ones could not help but look at each other strangely and in fear.

"What's going on?" Ghost-clawed Venerable One mumbled, "Did the Humans get their hands on a special trick?"

"Hmph, that must be the case, or the Yuqi the Venerable One won't anyhow provoke us." Black-faced Venerable One was furious. "Every time the Humans' formation changes on a large scale, it'll be when they become tough without reason and start to challenge us."

Gold-bodied Venerable One twisted its enormous body. It was also staring at the poisonous fog in the sky, but it shook its head and uttered, "This isn't right…"

"What?"

"It doesn't seem like the formation map's power." Gold-bodied stuck out its fearsome tongue and asked, "It looks like the effect of a treasure, doesn't it?"

Ghost-clawed Venerable One and Black-faced Venerable One were stunned. They looked at the dense poisonous fog again with weird looks in their eyes.

The Humans' formation maps were well-known even among the Insects. If a formation map's power could be unleashed to an extremity, even a Venerable One would be helpless against it.

As at this moment, Yuqi the Venerable One was the only one controlling the Big Mountain-guarding Formation, but he did not show a weak impression despite being pressured by 3 insect Venerable Ones.

The Humans' formation maps had numerous queer effects, so much so that it would not be unusual for one to suddenly have the power to reduce toxicity.

Nevertheless, formation maps were formation maps; they were entirely different from treasures. Even if they could generate identical effects, they could not be mixed up.

The 3 insect Venerable Ones stared at the poisonous fog for a long time before they exchanged glances of joy.

"Treasure—it's definitely a treasure that can absorb poison!" Ghost-clawed Venerable One was thrilled. "The treasure's circulating outside the Big Mountain-guarding Formation to absorb our poisons, which is why they still can't erode the formation."

"Yes, given that the treasure has such a wonderful effect…" Gold-bodied Venerable One looked like it was in high spirits. "It can only be one thing."

"A poisonous spirit!" Black-faced Venerable One blurted without any hesitation. It seemed to be full of energy, such that it was suddenly not ruthless anymore from when its follower was severely injured earlier.

It was worth noting that a supreme treasure with extreme poison would give birth to a "spirit", and such a treasure was the only thing that could not only survive, but also keep absorbing poison inside a poisonous fog.

As for what this kind of treasure represented, nobody knew better than the 3 insect Venerable Ones.

"We must get that spirit!" Ghost-clawed Venerable One looked at its comrades and expressed in a deep voice, "We mustn't hesitate even if we have to sacrifice everything."

Black-faced Venerable One and Gold-bodied Venerable One were hesitant for a while before they nodded hard.

Before they came here, their priority was to attack the Beast King Sect and benefit the most from it. However, they decided that they would be willing to do anything to obtain the "spirit".

Of course, that did not include sacrificing their lives.

"First of all, we must force the spirit to come out," Ghost-clawed Venerable One noted, "Let's make a move too; we must increase the intensities of the poisonous gases to a stage where even the poisonous spirit dare not absorb them anymore."

"If we make a move now…" Black-faced Venerable One looked hatefully at the Big Mountain-guarding Formation and mumbled, "They'll benefit from it!"

The 3 of them were Venerable Ones from the Insects, but they dared not enter the mystifying and poisonous place. Moreover, if they wanted to increase the poisonous fog's intensity, they must use their origin powers.

They had planned to use those powers during the most crucial moment to go against the Big Mountain-guarding Formation and Yuqi the Venerable One.

If they used their origin powers at this time, their war against the Beast King Sect from the Humans could basically be cut short.

Such an anticlimactic war would surely affect the Insects' reputation seriously.

Even so, they were left with no choice because they wanted to acquire the poisonous spirit, which they had not seen.

Ghost-clawed Venerable One took a deep breath, then its body began to expand. When its body expanded to roughly 10 times its original size, it opened its large mouth and spat out black gas as thick as paste, which soared into the sky. After forming a giant arc in mid-air, the black gas landed in the poisonous fog at the Big Mountain-guarding Formation's periphery.

The poisonous fog immediately became agitated as though a calm lake was being stirred by a big stick, causing the lake water to oscillate.

Black-faced Venerable One and Gold-bodied Venerable One looked at each other and nodded. Subsequently, their bodies expanded quickly, and they also spat out corresponding auras with strong poisons.

They were Venerable Ones, after all. Even if poison was not their forte, given their cultivation bases, as poor as their natural gifts were, their auras could also be improved to a maximum. Therefore, when the 3 insect Venerable Ones spat out their poisonous gases into the poisonous fog, the fog instantly changed drastically and was substantially upgraded.

※※※※

On the top of the mountain, Ou Yangming's face changed all of a sudden. A part of his mental conception was attached to the poisonous pill's body, thus he was observing and in contact with every move in the outside world. As compared to the people that were inside the Big Mountain-guarding Formation, he was much more well-informed.

Earlier when the insect powerhouses went all-out to release poisonous gases to gradually increase the poisonous dog's denseness, the poisonous pill's spirit was indescribably happy as it kept swimming around to absorb the gases' essences. It was like a monster that would never be worn out as it devoured endless energies to its heart's content.

After absorbing without an end, plenty of poisonous gases were compressed into the purest energies, which were delivered into the poisonous pill bit by bit.

Consequently, the poisonous pill became blacker; instead of an ordinary black, it was similar to the center of a black vortex, which released an unimaginably marvelous power. If one could see the poisonous pill beneath the centipede's legs, one would be appalled because the pill had undergone an unbelievable change. It seemed to have turned into an unpredictable and black starry sky. In the starry sky, vague nebulas could be seen.

The poisonous pill seemed to have gone through a revolutionary transformation after it absorbed abundant poisonous gases.

In the beginning, the poisonous pill was the one that gave birth to the spirit, but the spiritual body was now feeding back to the pill, allowing it to advance as if it became a poisonous world.

Inside the poisonous world, the prototype of a poisonous space could even be seen. Of course, there was only a sign of new development. If the space were to be expanded and stabilized, nobody knew how much energy would be needed.

In any case, Ou Yangming was not in a hurry because it was best for the poisonous pill's spirit to slowly absorb the poisonous gases here.

Ou Yangming believed that as long as the spirit was given enough time, its wish would come true, where the poisonous pill would have a new lease of life.

Who knew, the poisonous fog became more intense out of the blue.

It was not a step-by-step process; the poisonous fog's intensity somehow skyrocketed as though a handful of salt was added into a cup of water, causing the plain water to be so salty that it could not be swallowed.

A thought crossed Ou Yangming's mind right away.

'Will such a terrifying intensity affect the poisonous pill's spirit?'

It was true that the poisonous pill's spirit could keep absorbing poisons to enhance its power, it must go through a process. Taking a Spiritualist as an example, one could easily pick up a 500-kilogram object with ease but if one was asked to carry the same thing before one grew up, one would be crushed to one's death.

Sure enough, Ou Yangming's worry came true. The centipede, which was transformed from the poisonous pill's spirit, slowed down at once because the sudden increase in the toxicity became unbearable.

"Small—smaller…"

Ou Yangming shouted crazily through his mental conception.

The poisonous pill's spirit had only been born for a short period, after all, so it could not make firm decisions in complicated situations.

On the other hand, Ou Yangming was different, hence he gave the spirit the most appropriate order.

Next, the big and long centipede shrunk, where it became soft and thin. It took only a split second for the nearly-305-meters-long creature to turn into only a few inches long.

Furthermore, half of the little centipede's body was embedded in the poisonous pill. As it swayed its body slightly, it looked so horrifying that it could not be put into words.