"The Withered Thorns are spread by the wind, and if there is a slight breeze, their seeds will spread into the air and drift away with the wind, and if the wind is strong and let it roll, it will be finished, and it will shake all its seeds clean and float with the wind like a cloud of smoke, and it can even float into the stratosphere, spread throughout the plane, and then it will be troublesome. ”

Luo Qiu explained to everyone: "Therefore, the most important measure to clean up the thorns of the withered demon is not to let its seeds spread, so we don't need to be able to cut, burn, smash and so on, if you cut at the thorns, the shock is enough to shake its seeds into the air, and it is even worse to burn, it is not afraid of fire at all, but it is the upflow of heat caused by igniting the flames, which will make it float higher into the air." ”

Speaking of this, Klotina couldn't help but ask, "Then you also invited a batch of wind elementals to come, didn't this just contribute to their spread?"

"No, no, no. Luo Qiu shook his head and said with a smile: "The wind is the way for them to spread, but it is also their nemesis, as long as we make good use of the wind, there are no seeds, withered thorns are equivalent to no strongest lethal weapons, at best it is just a plant, please take a look at my latest invention - vacuum cleaner." ”

It is said to be a vacuum cleaner, but it is actually a vacuum cleaner, modified from a Thunder Chariot.

Eleven months ago, Luo Qiu's army set off for the Yellow Sand Plane, with a total of fifty-one Thunder Chariots. However, after the departure of the army, the construction of the Thunder Chariot never stopped, and in the following three months, dozens of frames were produced one after another.

It's just a simple frame, because Tesla also set off with the team, and there are some core components that only he can make.

After Luo Qiu rushed back from the yellow sand plane, until the spider shell powder was used in steel smelting and dragon pattern steel was created, the frame of the old-fashioned Thunder Chariot was built sixteen, and then all of them were discarded, because Luo Qiu was going to use dragon pattern steel to make a 100-meter-long Void-level Thunder Chariot, and this kind of bus was backward.

Now modify the vacuum cleaner, simply use the waste, after all, it is a vacuum cleaner, but it is not much smaller than a bus, the main components are a powerful wind turbine and an electrostatic filter, these two things are larger than a room, and people can't carry it.

The vacuum cleaner is suspended in mid-air, the long straw hangs down, swings from side to side, starts the vacuuming, and within two meters of the ground, the sand and gravel on the ground are sucked up and flying. The suction is so strong, and the withered thorn seeds that are as small as floating dust are even more difficult to escape the suction.

Sand and gravel, floating dust seeds and other debris will be centrifuged and separated after entering the dust collection room, a small amount of debris reaches the rear filter screen, intercepted by the filter screen, and the debris with smaller particles can not even be separated from the dust collection room, and the filter screen cannot be intercepted, and it will reach the electrostatic filter room.

The high-voltage electric field makes the particles that pass through negatively charged, and then adsorbed by the positively charged dust collection plate, this electrostatic filtration method can filter even PM2.5, not to mention thorn seeds, which are much larger than PM2.5.

At this point, knowledgeable students are about to ask, what is used as fuel for a vacuum cleaner with such a large power?

The magic is here, this kind of high-power vacuum cleaner, no coal, no carbon, no electricity consumption, no emissions, clean and environmentally friendly, as long as it is started, it can continue to work in a cycle, just like a perpetual motion machine, until the parts are damaged, because it is the wind element that drives it.

As long as it is activated, a large amount of wind is sucked into the turbine, which can produce a perpetual motion effect that can only be achieved in the wizarding world, and the wind element that is sucked in directly drives it, and the more wind it is sucked into, the more wind element it has, and the greater the driving force. The greater the driving force, the more wind elements are drawn in, forming a positive cycle.

If left unchecked, the positive cycle will lead to an increase in power, which will quickly destroy the turbine, so instead limit its power, and this excess power will go to the electrostatic filter to generate electricity and collect dust.

With more than a dozen perpetual motion vacuum cleaners that don't need to be refueled, it will be a breeze to encircle and suppress the withered demons and thorns.

The battle is about to begin, and Hot Wind, who is called back to work, and his companions, who are reluctantly doing a big rock concert, do not want to work.

However, the King of Steel did not give them a chance to choose, and ordered Gray and the others to press them to the ground and beat them, and they knew what to do.

The wind elements drilled into the turbine and pushed the blades in the turbine desperately, and the blades slowly rotated, and the wind from the outside world was quickly sucked in.

At first, the air volume is small, but as the turbine blades turn faster and faster, the incoming air volume also increases, and with it comes an abundance of wind elements.

Hot wind quickly became excited: "Oh my God, what a fierce wind, such an abundant wind element, so cool, I won't go out!"

At first, I was reluctant, but now I can't get out. But no, the turbines are activated, so they don't need to stay in the car and get down to work.

After all, the suction range of the vacuum cleaner is small, plus the swing of the pipe, the coverage area is within 20 meters on the left and right sides, even if more than a dozen cars are lined up, the coverage area is only 300 meters, and I don't know how much time it will take to patrol the thorn wasteland alone.

With the wind elemental, it was different, they roamed around like a hurricane, and everywhere they passed, the impurities on the withered thorns were swept clean, not to mention the seeds, and some of the skins were cut off by them.

These wind elements quickly rolled up a large piece, and then slipped into the vacuum cleaner, threw down the rolled things, and ran between the turbine and the filter to blow the air, their rapid rolling is very laborious, just enough wind elements can replenish them, and after a while, they will continue to work energetically.

After resting and working for a while, not only did he not lose weight, but he gained a lot of weight, which was originally just a cloud of wind elements with a diameter of two meters, and finally became four meters in diameter.

Thorns whose seeds have been cleaned up, like a virus that is not contagious, are essentially just a mass of plants with spikes.

Luo Qiu cut it off, shredded, cut it without moving, cut it, it was solid, crushed and soaked in water, and the starch could not be precipitated, obviously it could not be used to make vegetables and bread.

The fiber is okay, and it can be used to make paper, but the number of thorns is too much, and the paper can't be used up.

Bundles of blighted thorns were cut down and sent to the mutated ghouls, fed desperately, and a large number of thorns were stuffed into the ghoul's stomach, forcing it to evolve the ability to quickly digest thorns, and then extract its digestive juices for cultivation.

Soon, Margaret, who was familiar with the car, cultivated a large pool of digestive juice, and directly threw the collected withered thorns into it, which quickly dissolved.

What is the digestive juice used for? It is to digest thorns, convert them into nutrients, and for ghouls to absorb, so these thorns will eventually melt into substances with very high nutrient content, which are refined through precipitation, filtration, flotation and other processes, and used to cultivate artificial meat or seaweed, etc., which are very good nutritional raw materials.

It is estimated that Wardcui, who sowed withered demon thorns, would never have imagined that this terrible plant, which was used to destroy the main material plane, would be used by Luo Qiu in this way and turned into a new crop of extremely high value.

Because the growth rate of thorns is so fast, it takes more than half a year to harvest the grain, and the thorns can be harvested in a week, and then processed to cultivate artificial meat, which produces more meat than growing grain.

But Luo Qiu was not prepared to let go of the Withered Demon Thorn like this, because the most valuable seeds had not yet been used.