"Brother Biao, who are you here?" Liu Zhen walked in with a smile, with two people following behind him.

Yu Biao looked up and couldn't help but be overjoyed. He jumped off the kang, immediately gave the person a bear hug, and said with a smile: "Cao Cao, Cao Cao is here. I was just thinking about your little glasses. Look, you ran here by yourself."

Shen Yang grinned and looked strange, complaining: "Brother Biao, don't be too enthusiastic, my little body almost broke up."

"Haha, I'm reckless, sorry, sorry." Yu Biao said, but his eyes stared at the box held by the team members behind Shen Yang. "It must be successful. I'll just say, how can such a thing without technical content stump our chemical genius?"

"Haha, Brother Biao, you've been awarded." Shen Yang carefully took the box and placed it on the kang. "According to your description, I made four samples, and I don't know which one is suitable for your thoughts."

"Okay, very good." Yu Biao opened the box, took out a round thing from the hay that was laid out, and looked at it carefully.

"This is an ignition thunder, suitable for defense at high places." Shen Yang introduced: "Light the fire line and roll it down the hillside, which can blow the attacking enemy upside down."

"Yeah, it's not bad." Yu Biao put down this, took out another one, and asked, "This one is quite big."

"The remaining three principles are the same, but the difference between size and material. This is the fire device, and the principle of the grenade is the same. It can be pulled." Shen Yang said, suddenly sucking his nose and asking, "What's it? It smells so good."

"Dog nose." Liu Zhen jokingly patted Shen Yang on the back of the head, "I have a good life. Make something delicious, and you will smell it. Dragon meat in the sky, donkey meat in the ground, and stinky brat, you have a good taste."

Yu Biao fiddled with several landmines one by one, and did not look up, and asked casually: "Didn't you distribute donkey meat to the people?"

"That's how I arranged it, but no one of the villagers wanted it. Each family only took a small piece, and the rest were sent here." Liu Zhen explained.

"There are all black gunpowder?" Yu Biao reached out and pulled Shen Yang and continued to ask: "Don't just think about eating. Have you tried this thing? What's the power?"

"I prepared the black gunpowder in the best proportion. I purified all the saltpeter. I have tried it and it is powerful." Shen Yang pointed to a small trumpet and said, "This is the smallest. According to my estimate, if it explodes at a close range, even if it cannot be killed, it can break its legs and arms."

Yu Biao held it in his hand and weighed it. After thinking for a while, he said, "Let's build small and medium-sized ones, and then use ready-made yellow explosives to make a few medium-sized ones. From now on, according to this specification. You must seize the time to build more. With it, I will attack outwards."

"I understand." Shen Yang nodded and finally asked: "Is this kind of ceramic OK? If there is a condition, I think it's still a good guy."

"Just make ceramics, or find a few stonemasons or stonemasons." Yu Biao pondered for a moment, made a decision and explained: "The Japanese devils have engineers, and iron-made ones are easily found."

"This will speed up the speed. You can use any porcelain bottle or pottery jar, and the small earth kiln in Qilipu can also be fired." Shen Yang nodded in agreement.

While talking, the cooked donkey meat and donkey bones were brought up, steaming hot and fragrant.

"I have someone come to Zhao Genbao, and there is also an old gangster. I will give a lecture after I finish eating." Yu Biao grabbed a bone and said while gnawing.

……………………………………………………………

After dinner and after cleaning up, everyone sat around the table and chatted laughing.

Yu Biao drew on a large piece of paper for a while, looked up and said, "Come on, let's start the lecture now, and the grassroots doctor Yu Feixiong will give you more valuable suggestions."

"Yu Feixiong? This is the word "Brother Biao", which is the first time I heard it." Liu Zhen quipped.

"Hehe, I won't tell him ordinary people." Yu Biao smiled and pointed to the illustration on the paper. "Look, these are some methods of mine warfare that I have come up with. Let everyone know. There are many clever methods that need to be figured out."

"It's said it's a mine war, but in fact, there's basically no difference between this mine, mainly in terms of burial and usage." Yu Biao began to talk, "The most basic thing is to pull the mine, bury the mine, bury the rope in the soil, and lead it to a distance. When the enemy comes, it will explode as soon as it is pulled."

"The key is that the person who pulls the rope should not be too far away. If it is not hidden well, it is easy to be discovered!" Zhang Sanmao saw the shortcomings of this landmine at a glance and said with a frown.

"Yes, this kind of wire pulling mine has the advantages of flexibility, but it also has the disadvantages that Sanmao said." Yu Biao nodded in appreciation and continued: "We can expand from wire pulling mines. Look, this is a pedal mine. Build the mine and fix the leads on the pedal. Once the enemy stepped on it, it triggered the mine. Similarly, there are clip mines, which are triggered with iron clips."

"It's great. Just bury a landmine and wait for the enemy to step on it from afar." Liu Zhen quickly understood, smiled and nodded repeatedly, then pointed at the picture and asked, "What does this mean in a string?"

"Oh, this is a chain of thunder, which is dedicated to blowing up the enemy's marching brigade." Yu Biao explained: "Stretch the mine leads one by one, and after the enemy step on the last thunder, the series of explosions will not blow them up."

Yang Huzhao touched his chin gently and nodded deeply.

Yu Biao reached out and slapped him in the back of the head, "You are pretending, you are an instructor, you have to study harder. Women like capable men. If you want the members of the Self-Defense Force to admire you, it will naturally reach your old lover's ears. Just wait for her to throw herself into her arms!"

Yang Huzhao rubbed his head and glared at Zhao Genbao next to him, "Boy, do you understand? You pretend to be serious. I will beat you if you believe it or not."

"I understand, I understand a little." Zhao Genbao shrank back and replied carefully.

"Take it slow." Yu Biao smiled at him with relief, "There are village chief Liu and instructor Yang here. One of them is knowledgeable and the other is experienced. If you don't understand, you can ask them. And those team members are not unwise, they just don't think about this. When everyone understands the principle of this mine, they have to explore and think about it together and strive to create more and better ways to use it. You must know that if this thing is used well, your village will have more protection."
Chapter completed!