As a chemical weapon, phosgene is a highly asphyxiating poisonous gas, which liquefies at normal atmospheric pressure when the temperature reaches below 8.2 degrees Celsius and above minus 118 degrees.

At that time, when Jiang Wei thought of this feature, a plan popped up in his heart. After careful consideration, this is the core of this carefully calculated segment of feeding methanol to middle-aged men.

Jiang Wei also took advantage of the characteristic of phosgene, put a bucket mixed with saltpeter and water in a small room, and made a temporary cold storage, in which he completed the filling of 100 phosgene liquids, put them into clay pots, and then plugged the mouth with a stopper. During transportation, wooden barrels are pushed by carts, water and saltpeter are placed in them, and the phosgene temperature in the pot is kept below 8 degrees.

After Jiang Wei's experiment, after the clay pot was taken out of the ice water, in about half an hour, the temperature in the clay pot would rise to more than eight degrees, and at this time, once the phosgene gasified, it would quickly produce an expanding force and squeeze out the plug blocking the mouth of the clay pot. At this time, a large amount of phosgene will gush out, and it will unscrupulously poison all nearby life.

Although Jiang Wei's first batch of more than 20 young people has undergone more than half a year of rigorous training. By training and running on Jungnam Mountain in the dark of night and hiding your figure, you can reach your destination in a very short time.

But it is still an impossible task to set up the clay pot in half an hour to complete the Dugu Mansion and complete the escape.

So Jiang Wei thought of a way and gave each of the young people two pieces of equipment, a bamboo cylinder, an oxygen tank, and a glass hood. With these two pieces of equipment, you can place the clay pot and hide it. Flee when the time is ripe.

In addition, Jiang Wei also considered another way, that is, long-range gas bombing, but in this way, the movement is too large, and there will definitely be a situation where someone escapes, so the risk of exposure will be greatly increased.

And if all these people are poisoned unconsciously, the outcome will be completely different, and the risk of exposure will be greatly reduced.

In the middle of the night, Jiang Wei had been standing on the roof praying, worried, he prayed that everything would be carried out according to his prediction, but no one could guarantee that this kind of thing would develop 100% as he expected. If the situation he expected does not happen, or if there is an accident in the middle of the way, then he can only find another plan depending on the situation.

While Jiang Wei was praying uneasily, the clay pots that were waiting quietly in all corners of Dugu's mansion changed almost at the same time. There was an extremely strong gas leaking out of the gap between the pottery mouth and the plug, and at the same time, the expansion of several channels increased several times, and the plug could not suppress these at all, and finally the stoppers rushed to the sky one by one, and the sound sounded almost continuously in Dugu's mansion for a while.

The guards and patrols nearby heard this sound and searched for it suspiciously, but they didn't find anything abnormal, someone saw the clay pot, picked it up and looked at it, but found that it was just an empty clay pot that I don't know who had dropped it, and they didn't care. In the end, nothing was found, but instead I smelled of rotten hay.

It didn't take long for the smell of rotten hay to become more and more intense, almost pungent, filling the entire mansion. The patrols and guards couldn't stand it, and the people who fell asleep smelled and frowned, maybe they didn't wake up from too much sleep, but the people who slept lightly jumped up and choked on the smell.

"Someone, what's this weird smell?"

"Find out for me, how do people sleep with this?"

For a while, the patrols and guards were busy, and this was the most nervous moment for the young man, because this kind of large-scale search was easy to find. Fortunately, these people were all looking for low places, and the young people climbed to high places one by one with hooks.

It didn't take long for the first cough to sound, one after another, the cough seemed to be infected, and it rang non-stop throughout the Dugu Mansion.

Only Dugu Qianyi, who had escaped from the Dugu Mansion and was on the mountain path, was lucky to escape this catastrophe.

Dugu's mansion was in chaos, and many people began to feel uneasy, feeling obvious symptoms of dyspnea, and also with symptoms of dizziness. At this point, everyone became frightened. Their first thought was that it might be poisonous. Otherwise, when there is no such strange smell, everyone is fine, why is it like this smell now?

When the first person shouted that the smell was poisonous, panic began to spread to the surroundings and spread to the entire Dugu Mansion. All the old and the young, the men and the women were all panicked, screaming, crying, for a while, it was a mess, and countless people rushed to run.

Due to the late night, and because of the symptoms of dizziness after poisoning, one by one is like a headless fly, and I just want to leave the stench as soon as possible.

And the teenagers in black clothes began to evacuate at this time. Such a hasty evacuation was only because their oxygen cylinders could not last long, and there was no preparation.

And just when the black-clothed teenagers retreated, Dugu Cheng, who was running out in a panic, widened his eyes for a while, and by the moonlight, he vaguely saw a young man dressed in black and wearing a glass cover from the wall, grabbing a rope and falling to the ground flexibly.

Dugu Cheng is at a young and strong age, surrounded by dizzy and crooked people, only he is healthy and strong, because of the relationship between martial arts training, he was resisted for a while, and his brain still maintains a certain degree of sobriety.

But when he saw the young man in black, his eyes widened for a while. Pointing at the young man, a word seemed to be stuck in his mouth.

"You... You... You..."

Dugu Cheng didn't mention it in one breath, but he understood everything at this moment, although he only saw one person, but this situation was obviously not something that one person could do. Thinking of this, Dugu Cheng was dumbfounded, is this going to kill my Dugu clan? Do you want me to exterminate the Dugu clan?

Dugu Cheng, who was already short-tempered, thought of this, and was angry for a while, and a mouthful of blood sprayed out. And because of the excitement of emotions, the blood circulation is accelerated, which leads to the acceleration of poisoning, and the brain is buzzing for a while.

The young man in black didn't notice Dugu Cheng, he hid in the corner of the wall and quickly got into the alley.

Dugu Cheng was stunned for a moment, in this case, shouldn't he kill people? Why didn't he kill me? Didn't notice yourself? Still is? Dugu Cheng suddenly felt extremely frightened. He understood that everyone would die, and that he was just a dead man in his eyes.

Dugu Cheng smiled, stood there and laughed and cried, a Dugu clan of Nuoda, among the nobles of Guanlong, is also a first-class family, and was wiped out overnight? How ridiculous is that?

Dugu Cheng never figured out, who was it, and which family did Dugu Clan offend to use this method to deal with my Dugu Clan? He couldn't figure it out, because he didn't have any friction or conflict with any of the family's gate valves at all. So why is that?

The poisonous gas erupted in Dugu Cheng's body, and he fell to the ground unwillingly. He looked at the crowd that was still crawling and tumbling on the ground around him, and his heart was extremely desperate for a while. At the same time, a wave of anger arose, making his face extremely distorted, and his trembling fingers were stained with blood on the ground and he wrote a few large words.