Although the black spirit rat group seems to be overwhelming and numerous, most of them are first-order demon beasts, and their strength is not strong, if there is a Purple Mansion monk who takes action to eliminate these rat groups, it will not be a problem.

But the crux of the problem is that to find the rat king of these black spirit rats, if the rat king is leaked, even if these black spirit rats are eliminated, it will not be long before the rat king can make a comeback with a large number of black spirit rats.

Therefore, this time to exterminate the black spirit rat, Lin Tianxuan's burden is relatively heavy, and he needs to develop an elixir that can restrain the black spirit rat in order to cause large-scale damage to the black spirit rat.

However, the Dan Fang for dealing with the Black Spirit Mouse did not need Lin Tianxuan to ponder it himself, Wuji Sect had already copied a copy of the Dan Fang, and Lin Tianxuan only needed to refine it himself.

But this kind of elixir is at least a second-order elixir, and non-foundation building cultivators can't refine it, relying on Lin Tianxuan alone, it is really difficult to catch up with the progress.

Wu Huai could only refine a part of it first, and then cooperate with the Ye family to refine a part, and two second-order alchemists could refine the elixir, which was more than enough to deal with a low-level black spirit rat once.

He inquired that Ye Tongxuan was the only one in the Ye family who was a second-order alchemist, and if he wanted to cooperate with him, he must find Ye Tongxuan, so that the quantity of this pill could be supplied in time.

This elixir is called Rat Exterminator San, which can make the black spirit rats become very violent, and the black spirit rats affected by this elixir will kill each other, so that Wu Huai and the others only need to go to clean up the mess and eliminate a large group of black spirit rats.

Three days later, Wu Huai and others set off directly to help the Hu family.

The reason why the Hu family was chosen was also because Ye Tongxuan assisted in the defense of the Hu family, and with Ye Tongxuan's joining, the production progress of the exterminator san could be much faster, and it would be more efficient in eliminating the black spirit rat group.

Everyone came to Qulian Mountain, only to see that the black pressure was overwhelming, all black spirit rats, the black spirit rats have been gathering here in the past few days, there are about 50,000 of them, Qulian Mountain is about to be unable to support it.

Although there were two foundation building monks inside to help defend it, the number of black spirit rats was too much, and the resources stored in Qulian Mountain were not much, so it was already in danger now.

Seeing this, Wu Huai immediately said: "Tianxuan, try the color of this rat exterminator and see how the effect is." ”

"Yes, Master." As he spoke, Lin Tianxuan took out a special jade box and opened it.

Inside was a pale red powder, and Lin Tianxuan used his spiritual fire to roast the powder and blow it towards the black spirit rat below.

A puff of reddish smoke gradually emanated from the jade box, and soon drifted into the mouse.

This burst of red smoke was quite strong, emitting a strange smell, Wu Huai frowned, this smell was really a little pungent.

"Master, this rodent extermination powder tastes a little strange, please bear with me." Lin Tianxuan said.

Wu Huai waved his hand and said, "It's okay, you continue." ”

The smoke quickly spread to most of the black spirit rats, regardless of their size, as long as they were contaminated with this red smoke, they immediately became extremely violent.

Some of the black spirit rats went crazy and frantically attacked the Qulian Mountain Great Array. More Black Spirit Rats broke away from the Rat King's control and began to attack their nearby counterparts.

In an instant, tens of thousands of black spirit rats killed each other, and even some second-order black spirit rats could not avoid it, joining the fight.

Under the influence of the drug, the black spirit rats became more bloodthirsty, their eyes were red, and they were almost fighting for their lives, and some black spirit rats still bit their opponents fiercely in their mouths even though their bodies were full of holes.

Some second-order black spirit rats devoured first-order black spirit rats, as if they were chopping melons and vegetables, effortlessly. At the same time, the strength of these black spirit rats is also rising rapidly.

These second-order black spirit rats are the main force to eliminate the rat group, they are already huge, and with the influence of drugs, they can devour hundreds of first-order black spirit rats at a time.

Those first-order black spirit rats were also not afraid of death at this moment, and they vigorously launched an attack on these behemoths.

As Lin Tianxuan emitted more red smoke, more and more black spirit rats joined the ranks of devouring each other, and tens of thousands of black spirit rats devoured each other, and the scene was particularly spectacular.

Around Qulian Mountain, the black spirit rats that were pressed by black were quickly formed, and due to devouring each other, the corpses of many black spirit rats were exposed and piled up into mountains of meat.

However, after all, Lin Tianxuan did not make many rodent exterminators, and they were quickly consumed, but such a number of rat exterminators were enough to wipe out this group of black spirit rats.

This kind of large-scale mutual killing is far more efficient than the monks themselves, even if Wu Huai personally takes action, it will take several days to catch all these black spirit rats, and during this period, you must always be on guard against the black spirit rats scattering and fleeing, and there will inevitably be many more fish that slip through the net.

It's just more than an hour of hard work, and there are only a dozen black spirit rats left around Qulian Mountain that are still alive, four of them are second-order black spirit rats, and the others are first-order black spirit rats.

However, since these black spirit rats had devoured enough of their kind, their strength had now faintly reached the second order, as long as they were given some time to digest, they would soon be able to rank among the ranks of second-order demon beasts.

The dozen or so black spirit rats that were alive had no intention of stopping, and fought directly together.

However, four of the black spirit rats did not do it immediately, and at this level, the demon beasts were more or less smarter, and did not join the battle of the first-order black spirit rats, and wasted their physical strength in vain.

After all, these four second-order black spirit rats were affected by the extermination of rats, and they also immediately fought together.

The black spirit rats around Qulian Mountain scuffled into two battle groups, both of which were engaged in a life-and-death struggle.

Ye Tongxuan and the others in the big array were very surprised when they saw this scene.

However, after feeling the strong aura, Ye Tongxuan knew that reinforcements were coming. It's just that I don't know what means they used to make tens of thousands of black spirit rats kill each other.

At this time, Wu Huai had no intention of waiting any longer. Among these four black spirit rats, there are already faint signs of breakthrough, if it is allowed to successfully break through, Wu Huai will face it a little tricky.

Although these black spirit rats killed each other very quickly, the surviving black spirit rats also promoted very quickly. Therefore, Wu Huai had to pay attention to these black spirit mice.

Just when these black spirit rats were fighting inextricably, Wu Huai and his two disciples made a move.

I saw Wu Huai sacrifice a small flag, on which was painted a lifelike python, although the flag area is not large, but this python looks like a god.

I saw Wu Huai injected a spiritual light, and immediately a three-zhang long giant python jumped out of the formation flag and went straight to the four second-order black spirit rats.

When the black spirit rats who were fighting saw their natural enemies, they immediately scattered and fled in fright.

However, this giant python didn't give them a chance, just one bite at a time, it was just a stick of incense, and the four black spirit rats all died in its hands.

At the same time, in the face of more than ten other black spirit rats, Wu Huai's two apprentices also used their own killing moves to kill them all.

At this point, the siege of Qulian Mountain has finally been resolved.