Zombie Crisis: Survival comes first

"Black powder?!" Chen Yu was also confused at this time, "He is a chemistry teacher, so he shouldn't say such things!"

After finishing his words, Xiao Jiu said in a deep voice: "Yes, but it's normal if he hasn't been exposed to bullets before, so he doesn't understand much."

"Last time you went out to deal with Lu Wenjing, do you still remember the bullets?"

"Of course, the chamber exploded immediately after Lu Wenjing pulled the trigger." Chen Yu nodded, "But I also want to find out the reason. Why don't you tell me."

"I will tell you even if you don't tell me. It will be more helpful after you understand these principles."

Then Xiao Jiu organized his thoughts and slowly began to talk:

"I have talked about why bullets are fired before, but I won't repeat it now. Although I later tried to use black powder instead, the effect was not good. I need to reduce the proportion of some materials. Secondly, there will be a certain amount of damage after a long time. Influence."

"I added more black powder to the bullets loaded in Lu Wenjing's pistol, so the weight will change somewhat."

"Secondly, because the black powder burns very quickly, the instantaneous pressure in the barrel is too high and the bullet cannot be fired, causing the chamber to explode."

Hearing this, Chen Yu took out his pistol, took off the magazine and pulled out a bullet. He frowned and said, "So, are we unable to produce firearms and ammunition for a long time now?"

As soon as he said this, Xiao Jiu shook his head, "It's enough for now. Xu Dali was really strong before. He had enough manpower. He probably plundered supplies from several cities, but he really got sulfuric acid!"

Having said this, Xiao Jiu paused for a moment, and then said seriously: "Xiaoyu, I know it's wrong to say this now, but to be honest, if we could have kept Xu Dali and Lu Wenjing, we would have traveled a lot less. detour."

"It's a pity that they have done many evil things, and we will not be able to survive together." Chen Yu sighed and said softly.

"Oh, so, there is no such thing as having both ends in the world. Xu Dali has enough manpower, so the chance of obtaining these resources is greatly improved, and that piece of shit Lu Wenjing actually got along with me in the first place!" At this moment , Xiao Jiu suddenly cursed.

"What?" Chen Yu was slightly startled, "There was something wrong with the bullet-making tutorial he gave at that time?"

"That's not it." Xiao Jiu waved his hand, "With the existing materials, smokeless gunpowder can indeed be made, because there is also nitric acid and sulfuric acid in the camp."

"For the former, I can extract it through potassium nitrate, but not sulfuric acid. I can't do this at all. Lu Wenjing didn't tell us how to extract sulfuric acid through sulfur at all."

"Once we run out, we can only sit back and eat nothing, unless we rush ahead of other survivors and continue to search for the needed materials."

Nowadays, Chen Yu knows more and more, so after thinking for a while, he said, "Are ether and sulfuric acid the most difficult to obtain?"

"Yeah, but fortunately we live in a modern city. Some chemical reagent stores may sell them, maybe you can find them." Xiao Jiu still had some hope at this time.

After all, as time progresses and they want to fight the enemy, explosives alone will definitely not be enough, and guns will never be eliminated.

At this moment, Chen Yu patted the table and said, "Jiang Yuchen is a chemistry teacher. You should be able to ask him!"

But he soon rejected his idea.

"No, Jiang Yuchen still feels that something is not right at the moment. We cannot trust him 100%."

"So, this is what I said before. It's such a coincidence. It's as if there is a giant hand invisibly adding fuel to the fire. It's as if someone has anticipated our predicament today, so such a person appears."

Hearing this, Chen Yu also understood that time could not afford to be delayed. He had to find the mole as soon as possible and find a way to confirm that Jiang Yuchen was one of his own.

Then he also thought about what Han Liyuan said. People around Shangguan Jing may also know this, but they are outsiders after all. Even if they have just formed an alliance, they may not necessarily reveal this information.

Because this kind of thing is equivalent to the survival of a camp, and no one will tell other survivors about it at the end of the world.

It soon became quiet, and Xiao Jiu did not disturb Chen Yu, because he knew that the other party must be thinking about countermeasures at this time.

It wasn't until a few minutes later that Chen Yu raised his head and said, "Just keep it the same as before. I won't care about Jiang Yuchen for the time being. In three days, I will definitely find out whether he is a human or a ghost."

After finishing his words, Chen Yu stood up and left.

Seeing his back, Xiao Jiu also felt relieved. After all, it was difficult for one person to have much effect.

And if it goes on, even Xiao Jiu doesn't dare to try to extract those materials. If there is an explosion, it is no joke.

There are still some left, enough to make smokeless gunpowder. At least for a short time, there is no need to worry about bullets in the camp.

......

After returning home, Chen Yu stayed in the bedroom all afternoon, thinking about ways to eliminate the suspicion of these four people and at the same time confirm Jiang Yuchen's background.

Because he is one of our own, he certainly cannot be interrogated directly without evidence.

Doing so will inevitably hurt other people. With Chen Yu's character, he would not do such a thing.

As darkness approached, Chen Yu made a somewhat reluctant plan.

"Dong dong dong!" There was a knock on the bedroom door.

Chen Yu walked over and opened the door, and saw Lin Yi holding a bowl filled with broth. He couldn't help but be slightly startled, "Is it getting dark so soon?"

"Otherwise?" Lin Yi walked in, looked at his room, and then put the bowl on the table, "Why don't you open the window in your room?"

After saying that, she walked over and opened the curtains and pushed open the window.

"Haha, I forgot." Chen Yu sat down and picked up a piece of meat with chopsticks. He was about to eat it when he suddenly thought of something and turned around and asked, "Yiyi, have you eaten?"

"Eat it!"

"Really?"

"Why are you lying to me?" Lin Yi patted his abdomen with his little hand, then lay directly on Chen Yu's bed, then spread his hands and feet, and said happily: "Your bed doesn't stink."

"Last time the community was attacked, Li Yao and I hid on the rooftop and took some people's quilts, but the result was still smelly..."

"I was used to being dirty when I was a kid. Now that I have the conditions, I'm a little more careful." Chen Yu replied while eating.

"Then what, do you want to move in with me?" After more than ten seconds, Lin Yi suddenly blushed and whispered.

Hearing this, Chen Yu picked up the bowl, took a sip of the soup, and said with a smile, "Are we separated now?"