Chlorine.
Chlorine, green gas, that is, green gas.
On modern earth, this gas was first produced by the Swedish chemist Scheele in 1774 using pyrolusite and concentrated hydrochloric acid. It was not found to be of much use at first.
But it was not until World War I that it was used by the German army in war for the first time, and its horror was demonstrated.
Time, 5 pm on April 22, 1915.
Location, Ypres region in western Belgium.
The two warring parties were the German army and the British and French forces.
At that time, the Land King's tank had not yet been invented. The battle positions of both sides were densely covered with machine guns, barbed wire, and trenches. No one on either side dared to initiate an attack, otherwise they would suffer heavy losses.
The war was stalemate and finally the German army decided to use their secret weapon.
As the attack order was issued, 6,000 cans of chlorine gas totaling 180,000 kilograms were released, forming a heavy cloud wall that moved towards the British and French coalition positions driven by strong winds.
Wherever the chlorine gas went, not a blade of grass grew. When the German troops followed the chlorine gas into the British and French allied positions, they found the enemy's corpses everywhere, with their faces and lips showing a strange blue color. This was because the chlorine gas cut off oxygen and made the blood extremely extreme. Caused by hypoxia. Some of the injured who were lucky enough to survive gasped loudly, coughed, spit out yellow mucus from their lungs, and then died in pain. This was because the chlorine gas eroded their entire lungs.
All metals exposed to chlorine rusted: the buttons on the corpse's clothes, decorative badges, and coins in the pockets all turned dark green; the swords, rifles, and artillery held on the ground and scattered on the ground also rusted. , it looked like it had been immersed in water for several months.
The position was in a mess, with corpses strewn across the field. In this single battle, 15,000 British and French troops were poisoned and 5,000 people died directly. A gap of nearly 10 kilometers was torn open in the perfect position. The German army marched straight in and gained a huge advantage.
Chlorine gas, or poison gas, such a powerful and terrifying war demon, was released.
In an era before nuclear weapons were invented, it was a biological and chemical nuclear bomb that could easily kill all the people in an area, leaving it a dead place for decades.
It's inhumane to use this, it's inhumane because it's so powerful.
In the cemetery, Richard raised his eyebrows while holding a heavy iron can and releasing chlorine gas into the downward passage.
It is indeed inhumane to use chlorine gas, but he does not intend to be humane to some of the beings in the cemetery, or to the insect swarm, so what he says is to be insect-friendly.
"Puff puff-"
Under the action of extremely high pressure in the iron tank, a tank of chlorine was released in a short time, and poured into the underground tomb crazily. Without blinking, Richard put the empty iron pipe back into the space iron ring, then quickly took out a brand new, filled iron can, opened the can lid with a bang, and faced the downward passage. Continue to release chlorine gas.
Richard decided to disinfect the entire tomb so that everyone in the tomb could feel the power of the chemical poison. This was his reward for the setbacks of two successive expeditions.
"Puff puff-"
Soon, the second tin can was empty, and he immediately took out a third new, full tin can.
Then the fourth, fifth, sixth...
Today when he came to the cemetery, he brought nothing but iron cans among the two interdimensional iron rings.
The seventh, the eighth, the ninth...
Chlorine gas continuously poured into the underground space of the tomb. Richard knew that because the chlorine gas was denser than air, it would continue to penetrate deeper and deeper along the tunnel inside, until the space inside was filled.
By then, most of all living creatures will die. Whether it is the mushrooms in the mushroom forest, the insect army, or other monsters, they will not be spared, even those with strong vitality such as tardigrades and the like. Even if it exists, it must sleep to save its life. And lifeless mechanical creations will be corroded by chlorine and completely lose their functions.
The attack of chlorine gas is comprehensive and pervasive, and cannot be avoided or resisted, because this is not a level contest at all.
The reason why he didn't do this before was because it was too time-consuming and required a large amount of chlorine, which was too troublesome.
But now, he doesn't mind.
He is still in the recovery period after pneumonia and the fading period of Bailangduoxi stain. It is nothing to waste a little time.
As for chlorine, you can get as much as you want.
However... the only restriction is the transportation of chlorine gas.
In order to avoid being exposed, he can only visit the cemetery at night and use a space iron ring to transport iron cans containing chlorine gas.
Therefore, the reserve of two spatial iron rings is the upper limit of chlorine gas that can be transported at one time. If this problem cannot be solved, he can only act as a transport worker again and again.
But this problem obviously cannot be solved, and they can only act as transport workers.
"call-"
Richard let out a breath. The chlorine in the two space iron ring cans had been completely released. There was no point in leaving it in the cemetery. He released the "Earth and Stone Control" spell to repair the cracks on the ground and return quickly.
Returning to the laboratory, he began to prepare new chlorine gas, liquefy it into liquid chlorine, and then fill it into iron cans, waiting for the next operation.
In this way, for many nights after that, Richard could be seen in the cemetery outside Baishi City.
In the tomb, the concentration of chlorine gas continued to increase, eventually turning into a devil's cave completely filled with yellow-green gas.
Richard waited patiently for a while, and after confirming that all the creatures in the tomb were really dead, he began to implement the next step of the disinfection operation.
…
Daytime.
Laboratory, there was a knock on the courtyard door.
"Bang bang bang!"
Alex's iconic voice sounded.
"My dearest friend, Mr. Richard, I got you what you asked for! Open the door quickly!"
With a "squeak", Richard opened the door, and saw Alex standing outside the door with a trembling face full of fat. He hadn't seen him for a while, and he had gained a lot of weight - his chin had already stacked up to four.
Behind the opponent are several carriages, and on the carriages are bags and bags of bulging things.
Richard glanced at it without saying anything, and just said: "Move in."
"Understood." Alex nodded and waved his hand, and naturally some coolies brought the things in and piled them bag after bag in the yard. Some bags are of poor quality, with cracks appearing and white powder quickly sprinkling out.
The powder looked like snowflakes, but not snowflakes. It looked like salt, but not salt, but...
…