The second hiding place of the demon clan is located two hundred miles southeast of the canyon, the terrain here is low, it is a swampy area with water, the area is about a hundred miles square, although the low temperature is extremely low, the black stagnant water is not frozen, and the surrounding area is filled with a strange stench mixed with sulfur.

At such a low temperature, the stagnant water does not freeze, indicating that these black waters are not real water, but an unknown liquid like water, and the demon monsters hiding here use the non-freezing properties of this special liquid to avoid the extreme cold of the outside world.

The demon monster can go into the water, but Wu Zhongyuan can't, in fact, it's not that he can't, but he doesn't want to, this kind of black water stinks, let alone go into the water, even if he gets the slightest bit of it, he doesn't want to.

He didn't know exactly what kind of monsters were hiding here, and he couldn't sense their number through the black water, but based on the bubbles that popped up from time to time all over the water, there were quite a few monsters hiding underwater, at least a few thousand.

Time is pressing, he can't afford to delay and hesitate, and he can't kill them one by one, and he has to use group extermination methods.

The Netherworld of Life and Death cannot be used, the area of the swamp is too large, and even if all the spiritual energy is consumed, it will not be able to absorb the black water.

In addition, there is another way, open the gate and release the water, just drain the black water here, and all the demon monsters hiding under the water will freeze to death, but after looking around, I found that it is not possible, because this place is surrounded by mountains, and the surrounding terrain is very high, only this hundred miles of area is low.

Worried and worried, the piercing blizzard reminded him that he could use the wind and rain to create a tornado that swept away all the black water in the swamp.

Doing so will also deplete a lot of aura, but there is no way to do it, but fortunately, it is a stormy wind and snow at this time, and you can take advantage of the situation.

When there is no other way to think of it, the only feasible way is the best way, you can't expect to maximize the benefits, and you have to pay the price when you should pay the price.

Just do it, pinch the trick, emit the aura to generate wind assistance, and the wind blowing in the southeast direction will be reversed, and then inject the aura to fuel the waves, so as to generate a tornado.

In all fairness, being in the Demon Realm, the casting of spells is greatly affected, and whether or not to pinch the trick is not very effective, because there is no heaven and earth aura around for induction and mobilization, and all that is used is your own aura.

As the tornado is generated, the first thing to be swept away is the strong stench that permeates the surroundings, and as the wind gradually increases, the black water in the swamp is also sucked into the air.

Although it was possible to suck the black water into the air, Wu Zhongyuan soon found that this method was not feasible, because the density of this black liquid was very large, and it would also take a lot of aura to hold them in mid-air, and as more and more black water was swept into the air, the amount of aura required would also increase proportionally.

After anxious thinking and observation, Wu Zhongyuan thought of a solution, moving the tornado to the southeast area of the swamp, where the terrain is the lowest, and there is a lower area at the junction of the peaks and peaks, which can forcibly bend the tornado and discharge a large amount of black water through that lower area, just like a pumping machine, there is no need to support the black water all the time, and it can be sucked and discharged at will.

This method proved to be feasible and multiplied with half the effort, as the thick column of water rose straight from the swamp, bent and turned from the ridge, and spewed out like a waterfall.

Fortunately, Wu Zhongyuan was also secretly introspective, he led the three clans to cross the border expedition this time, the preparation was really insufficient, and many details were not taken into account, but on the other hand, some details could not be foreseen before leaving, without personal experience, any foresight and preparation are suspected of talking on paper.

The speed of drainage depends on the amount of water, but it also depends on the size of the pumping machine, and the speed of using tornadoes to remove water is terrifying, and the water in the swamp is significantly reduced in less than five minutes, and the bottom begins to bottom out after ten minutes.

The stagnant water in the swamp is not deep, and without the thermal protection of the black water, the swamp gradually begins to boil, not really boiling, but the demon monster hiding under the water begins to panic and agitate, this is a reptile that resembles a crocodile, with a head that resembles a carnivorous dinosaur, but it is not very large, it is the size of a bull, and its body is covered with thick armor.

Under the control of the desire to survive, these demon monsters have two completely different reactions, one is to try to drill into the mud of the swamp, and the other is to stand upright, running quickly from the silt that is about to freeze with two hind limbs, trying to avoid the cold.

No matter which method it is, the result is the same, it is the black water that blocks the low temperature, not the silt, without the cover of the black water, the silt is quickly frozen, and the demon monsters who drill deep into the silt are all frozen to death in the silt. And those demon monsters who jumped out and tried to escape for their lives were all frozen to death by the extreme cold after running a certain distance, their individuals are relatively large, and they must not be frozen and brittle for a while, so the inertia generated by running did not break their corpses and shattered, and most of the monsters still maintained a running posture after being frozen to death.

After emptied all the black water in the swamp, Wu Zhongyuan turned around and left, his task tonight was very heavy, and he needed to travel to dozens of different areas within a radius of three thousand miles.

A few thousand is not a small amount, but compared with 800,000, a few thousand account for a very small proportion, just when Wu Zhongyuan was worried and worried, his luck came, the third place of refuge chosen by the demon clan is a huge underground cave, it is impossible to use numbers to describe the size of this cave, because it is too big, and the terrain inside is also very complicated, in addition to a large number of open and flat areas, there are many bottomless ravines and moats, and there are plants growing here, and some areas even have forests composed of tall trees.

There are at least seven or eight types of demon monsters hiding here, and there are two kinds of birds among them, and the entire cave is full of dense and countless people.

Because Wu Zhongyuan did not hide his body when he entered the cave, the demon monsters gathered in the cave discovered his intrusion at the first time, and after a few screams full of fear, the cave instantly exploded, and those who could fly and run, among them, there were a large number of murderous and violent ones, rushing towards Wu Zhongyuan.

Although Wu Zhongyuan had a long sword in his hand, he did not confront the demon monsters that rushed over, but dodged quickly, moving quickly from the cave, and at the same time looking up, looking for a relatively weak area.

At most, it was only ten seconds, Wu Zhongyuan selected three areas, and after noting the distance between them, he sent out the Heart Sutra with qi, urging the fire dragon true qi to slam the cave dome, and he did this not to collapse the cave, but to shatter the cave roof and introduce external cold.

The power of the etheric aura to urge the fire dragon true qi can be imagined, with a loud bang and debris flying, the roof of the cave was pierced in one fell swoop, but because the gap was too small, the speed of external cold invasion was very slow.

Seeing this situation, Wu Zhongyuan hurriedly dispersed the aura, gave birth to the protective aura from outside the body, and then shook his arms and stepped on the ground, flew up, and flew out from the gap at the top of the cave, expanding the gap that was originally only a square by three times.

Because the underground space is too large, a gap is far from enough, Wu Zhongyuan hovered in the air, took the first gap as a reference, determined the specific location of the other two weak points according to the direction, and slammed with the fury of thunder, several thunderbolts went down, and the second gap was also opened, followed by the third place.

Wu Zhongyuan broke three gaps in tens of seconds, and the monsters in the cave could only watch him bombard from the outside, but they couldn't stop him because they couldn't withstand the low temperature.

After breaking through the three gaps, Wu Zhongyuan returned to the cave.

Seeing him go and return, the demon monsters rushed towards him overwhelmingly, Wu Zhongyuan reached out with his arms, and broke through two cyclone black holes at the same time with the life and death netherworld, sending a large number of monsters rushing into the void.

At this time, the demon monster has recovered from the previous panic, and has gone forward one after another, fighting back, this move is in the arms of Wu Zhongyuan, without his own hands, just open his pocket, and the enemy will throw himself into the net.

However, this situation did not last long, and after a few minutes, the demon monsters suddenly stopped the conflict and quickly dispersed in all directions.

Seeing this, Wu Zhongyuan was overjoyed, and the enemy's retreat was so decisive, indicating that their leaders were secretly commanding here......