“Bingo.”

Looking at the slowly opening door, Wang Wenqing wiped the sweat on his forehead and snapped his fingers quite proudly. Suddenly, Wang Wenqing seemed to remember something, quickly turned his head, and found that Zhao Ying was still squatting hard, and quickly stopped:

"Come on, stop. Come here, I have something for you to do. ”

"My lord, what else...... Do you want me to do it? ”

Zhao Ying walked over tremblingly, not daring to look directly into Wang Wenqing's eyes. Because of the vigorous exercise just now, Zhao Ying's shoulders couldn't help trembling, and the sweat had soaked through the white sheets, outlining Shui Ling's skin faintly, seeing that Wang Wenqing was in a trance, and his eyes couldn't help but wander over Zhao Ying's body a few times-

Feeling Wang Wenqing's gaze, Zhao Ying's face suddenly turned red and she lowered her head in fear. Wang Wenqing realized his gaffe at this time, quickly coughed twice, looked away, took off his coat and threw it to Zhao Ying, and said in a slightly soothing tone:

"I didn't ask you to do the squat just now to humiliate you, it's just a necessary precaution. I try not to kill people if I don't have to, but I don't want anyone to kill me. Now the door is open, you go in first, I'll break the back, find the supplies, and we'll get them out together. I can give you a quarter of everything except gasoline. I opened the door, and I took three-quarters, and it was right. Besides, you're the one who tried to murder me, so that's a fair decision for you, right? ”

"But I'm ...... I don't dare to walk in front......" Zhao Ying said pitifully.

"You've already fooled me once, don't try to fool me a second time. You didn't be so good when you stabbed me like crazy, and who knows if you'll do it again? I think I'm tolerant enough of you. You want to kill me, and I'll give you supplies. You still refuse to cooperate, trying to test the limits of my patience? Wang Wenqing said sharply.

"No, no...... Me, I...... I'll go first......"

After hesitating for a long time, Zhao Ying still chose to cooperate. Although walking in front is definitely the most dangerous, Zhao Ying knows that Wang Wenqing can spare his life is indeed generous enough, if he behaves uncertainly, it can only make Wang Wenqing more suspicious and impatient, and when the time comes, with Wang Wenqing's strength and courage, it is just a matter of killing himself.

"Put your clothes on, or I won't know where to put my eyes."

As he spoke, Wang Wenqing tore off a strip of cloth, dipped it in some gasoline and lit it and threw it into the cave. As soon as the fire flashed, the burning cloth was instantly extinguished, indicating that the oxygen content in the cave was very low. Wang Wenqing waited patiently for a quarter of an hour, and then lit a strip of cloth dipped in gasoline and threw it into the cave, this time the strip of cloth burned smoothly for two minutes before it went out, and there should be no problem.

"You can go in, I'll follow you. If you are in danger, don't fight, just withdraw immediately, you understand? Wang Wenqing made a simple torch with the last bit of gasoline, handed it to Zhao Ying and said.

"Ming, understood."

Zhao Ying nodded timidly, and then walked towards the cave with a torch. Wang Wenqing clutched the wrench tightly and followed behind, looking around cautiously. The cave is an artificial concrete cave with a large line written on the walls in red paint:

"Emergency shelters, for the exclusive use of government agencies. The civil air defense project is heavier than Mount Tai. ”

Walking down the cave for dozens of meters, the eyes of the two suddenly opened up. It turned out that there was a square-sized air-raid shelter underneath, and in the air-raid shelter were several desks with dusty monitors, computer mainframes, office supplies, furnishings, and even a fish tank. It seems that this is a temporary command post built underground by the government in the early years of the disaster to fight the emergency. It's a pity that it hasn't been used yet, and a sudden change has taken the lives of 95% of men, and this place is unknown.

"How did you know about this place?" Wang Wenqing looked at the surrounding environment and said vigilantly.

"I'm the mayor's daughter, and he died at a very young age, leaving me and my mother in a survivors' camp outside the city. Two years ago, our camp was attacked by other survivors and all of them died. Before she died, my mother told me that my father had built the shelter, so I fled to the city with a few girls. On the way we met monsters, the other girls died, I was the only one who came here, but found that I couldn't open the door here, so I ...... Yes!!! ”

Suddenly, Zhao Ying shouted in horror and quickly took a few steps back, as if she had seen a very terrifying scene. Wang Wenqing was shocked, and quickly grabbed the torch and took a photo behind the desk, only to see that between the desks, several mummified corpses fell to the ground, and empty bottles and packaging bags were thrown around him. Seeing this, Wang Wenqing cautiously walked over and kicked the corpses, and after confirming that they could no longer move, he shouted to Zhao Ying:

"It's okay, it's just a few dried corpses, maybe it's an office worker here. Go look around for supplies, and hopefully the food buckets of these agencies haven't eaten all of them! ”

Two men each carried a torch and searched everywhere. Ten minutes later, Wang Wenqing poured out one drawer after another and rummaged through, finding nothing except some documents and reports. Just when Wang Wenqing was annoyed, he suddenly found a dry corpse wearing a police uniform holding a small box in his arms. Wang Wenqing held back his nausea, snatched the small box from the arms of the dry corpse, and found a line of small words written on the box by the light of the fire:

"Doom-class weapon kit."

Wang Wenqing put the torch aside, opened the box, and found a heavy crossbow made of steel cast and processed neatly inside. Wang Wenqing picked up the crossbow in confusion and tried to aim, and said to himself:

"This is a 'devastating' weapon? Are you kidding me? ”

Confused, Wang Wenqing grabbed an instruction manual in the box. The instruction manual reads:

"The Worm Iron Crossbow is a devastating weapon created from a new type of material. Although the cause is unknown, experiments have shown that weapons made from tiny amounts of steel from alien insects, temporarily known as 'insect iron', are far superior to those made of any alloy on Earth. Each Worm Iron weapon requires sacrificing a large number of soldiers to collect materials, so each city's police department is limited to one for emergency use, so please use it sparingly, and remember, please do not use it on humans. ”

Next, the following instructions carefully explain how to assemble each part. At the bottom of the manual, there is a paragraph written with dried blood:

"I failed.

I worked hard to assemble and assemble each part using the materials from the assembly box, but it still couldn't be finished because I couldn't make its elastic wire bowstring. The manual says 'electrochemical machining', so I use an electrolyte for processing, but the bowstring cannot be used as a weapon. I'm sorry, I'm an incompetent, I have betrayed the trust of the country, and I have wasted the precious weapons that I bought in exchange for the lives of my soldiers, and we will all die here. ”

Wang Wenqing glanced at a few reagent bottles on the desk, pulled out a few still shiny steel wires from the policeman's hands, sighed, and said to the policeman:

"Brother. You did your best, trust me, you're not an incompetent, you're just-"

Saying that, Wang Wenqing shrugged his shoulders:

"The chemistry teacher just died young."

Electrolytic machining is a way to process metals in an electrolyte using the principle of anodic dissolution. There are many types of electrolytes, including battery electrolyte, biological electrolyte, and machining electrolyte, with different types and different compositions. And the poor little policeman apparently did not understand this, so he made a bottle-

Sodium chloride solution. (commonly known as, normal saline)

The bloody facts once again confirm a 10,000-year-old truth.

Learn mathematics, physics and chemistry well, and you will not be afraid to go anywhere. If physics and chemistry are not good, you can't do anything.

-- Wang Wenqing believed.

(The recommendation for these two days is a bit less!) is still hovering in the fourth place, and there is no hope of going on like this to kill the front. Readers, don't forget to recommend tickets, thank you again! ）