Landmines seem tall and high-end, but their internal structure is not complicated.

Moreover, the earliest origin of this thing was China. As early as the Southern Song Dynasty, the earliest landmines in history appeared. They were called "Shentian Thunder" at that time, and were buried underground and ignited and detonated with leads.

Later in the Yongle period of the Ming Dynasty, a book called "Fire Dragon Artifact Formation" also mentioned landmines. People called it "fighting cannons" or "self-invasion cannons". Landmines of that period had already had the prototype of fuse triggering.

Later in the War of Resistance Against Japanese Aggression, landmines were a must-use anti-Japanese weapon for the anti-Japanese armed forces in various places in our army.

In the famous movie "Mine War", all kinds of strange land mines are the intellectual inventions of my working people.

They used the simplest materials to create landmines that made the Japanese pirates frightened. Because they were afraid of landmines, the Japanese pirates could only hide in the artillery tower and didn't even dare to go out.

The mines created by Li Qinzai are trigger mines, and they will explode when they step on them. He has advanced the mines hundreds of years.

It is not difficult to make materials. Let the blacksmith create several connecting devices with a built-in flint. Once someone steps on it, the connecting device on the surface sinks, rubbing the flint under the action of gravity, and detonating the gunpowder in the mine.

To be honest, the manufacturing process really made him frightened. He was reflecting on why he was killed several times. He was a dignified county magistrate and a son of a daughter, so he had to do such a life-deserving thing.

However, thinking about the reality of the Tang Dynasty's upcoming expedition to Goguryeo, Li Qinzai gritted his teeth and created it.

The effect is obviously ideal. When all the parts and data are not wrong, this thing will explode as soon as you step on it.

"Physics, chemistry..." Li Sujie and others were still shocked and muttered.

Li Qinzai sighed and said, "I ask you to learn my knowledge in class. You don't care about it. I'll just live and wait for the holidays. Now that my knowledge is applied to reality, you should understand what it is."

"The firecrackers, hydraulic presses, the three-eyed guns equipped by the King of the Tang Dynasty, and this landmine, etc. were all created by the principles of physics and chemistry. The emperor once said that my knowledge has the ability to destroy the world, and I am willing to teach it all, but you like to ignore it."

Li Sujie said with shame: "It's the disciple who was wrong, but I want to tell the gentleman that in recent days, we have been with Princess Xuancheng... Well, with the help of the disciple, my grades have improved a lot. The gentleman said that he must pass the exam before the holiday at the end of the year, and the disciple asked himself that he could do it."

The other disciples agreed, with confidence and vague slight slight slight.

Li Qinzai opened his eyes wide in surprise, and then found Princess Xuancheng in the crowd.

Xuancheng lowered his head and said nothing, his pretty face turned slightly red.

Li Qinzai smiled: "If this is true, it is really gratifying. The ancestral tombs in your home should be filled with smoke at this time..."

Li Sujie was shocked and hurriedly corrected carefully: "Sir, it should be 'green smoke'..."

"Uh, that's what I mean, the ancestral tomb is smoking, you are promising."

Li Qinzai smiled and nodded at Xuan Cheng in the crowd, which was a praise for her.

Xuan Cheng blushed and suddenly covered his face and stamped his feet shyly, looking like a typical little fan.

Li Qinzai grinned, tsk, why is the princess's face so thin? Thinking about the princess in her previous life, when the guests took off their pants in the private room, they were not blushing. The oil seller was very familiar, and they were very familiar.

…………

Another powerful firearm was launched, and it was of great significance to the Tang Dynasty military, so the news could not be concealed.

After the experiment, he rode a fast horse and left Ganjingzhuang and ran towards Chang'an City desperately.

The little bastards stood there quietly, and after a long time, Li Sujie gritted his teeth, turned around and walked towards the school.

The other little bastards also followed him with a stern expression.

Perhaps only by letting them truly see how powerful the teacher’s knowledge is, will they remember it deeply in their hearts and take the initiative to learn.

Li Qinzai once asked hard for a problem that he could not solve, but a landmine woke them up. If he had known this, he would have buried a landmine at the gate when the school was just opened, which would have killed these turtle grandsons.

Li Qinzai stretched his waist and led Qiao'er back. Of course, the finishing work was left to the corpses that were blown out of the ground, as well as the blood and internal organs all over the ground.

Qiaoer was very excited to jump up and look up at Li Qinzai's little eyes, which had a different light, like a lantern leading the way in the dark.

"Dad is so powerful, he is good at everything he does. With just one move, he will shock his brothers and brothers. The new things he created are also amazing, and they are particularly loud."

Li Qinzai smiled and said, "You said there should be some movement during the Chinese New Year. Is this movement big enough?"

"Yeah, it's big and loud enough. The whole farmland trembled, and the child's ears were almost deaf..."

Then Qiao'er looked at him nervously and expectantly: "Can the new things made by his father be for the child to play with?"

Li Qinzai's eyelids twitched and glared at him, "Remember for me, what my father made just now, not to mention that he can't even touch him, and he can't even think about it. You can see clearly the fate of the sheep. Do you think it's better than it?"

Qiao'er sighed and gave up completely.

"Okay, dad, if the child doesn't care about it..." Qiaoer said aggrievedly.

Li Qinzai glanced at him: "I find it hard to believe you if you lose money. Why don't I calm down for you?"

Qiao'er looked at him in confusion: "How can you calm down?"

Li Qinzai looked around and found that the heavy snow in Guanzhong had been stopped for several days, but the snow on the roadside was still deep, and it was more than one foot high when I stepped on it. Every step was very difficult.

Li Qinzai blinked evilly, suddenly picked up Qiao'er, chose the whitest and thickest place in the snow, and threw him into the snow...

Qiaoer screamed in the air, danced and the last one planted a green onion, and inserted his head down into the snow, leaving only a pair of short legs outside the snow, slashing and kicking.

Li Qinzai laughed.

Of course, it is for having children to play, otherwise what is the point?

…………

News that Li Qinzai created landmines soon spread to Tai Chi Palace.

Li Zhi and Empress Wu were shocked. From the description of the knight reported, Li Zhi suddenly discovered that the new firearm created by Li Qinzai this time was so powerful. What is important is that the annihilation of the enemy is invisible. If used on the battlefield, it will definitely be a weapon that will scare the enemy.

The imperial court is now quietly preparing for the food and weapons of the Eastern Expedition. The soldiers are also working hard for the cold weather. The state machine is slowly starting up, and everything is preparing for the Eastern Expedition.

Just at this moment, Li Qinzai built a powerful new firearm, which was a great addition to Li Zhi.

Li Zhi immediately took it seriously and summoned several veterans in the court without saying a word. The group of people rushed straight to Ganjingzhuang without hesitation.

Li Zhi and the veterans must see the power of this firearm with their own eyes in order to make tactical arrangements calmly. Perhaps its appearance will change the strategies originally set by the veterans.

Not to mention anything else, if the landmine is really useful, then after mass production, it is used to block the enemy's retreat path. The only way to pass, the Tang army can concentrate its superior forces and focus on annihilation of Goguryeo with the power of a lion fighting against a rabbit.

This is the magical role of a new firearm on the battlefield, and it is not exaggerated to say that it can change existing strategies.

It was already afternoon when the king and his ministers arrived in Ganjingzhuang. Li Qin could carry the eunuchs to inform him in advance, so he led his troops to wait at the entrance of the village.

Instead of riding a carriage, Li Zhi came on his own, following many veterans and thousands of black guards in the Wulin.

Seeing Li Zhi dismounting at the entrance of the village, Li Qinzai hurriedly bowed and bowed. As soon as his waist was bent down, Li Zhi held his arm.

"At this time, why are you doing something false? Take me to see your newly-built firearm. It's called a 'landmine', right?"

Li Qinzai smiled and said, "Yes, I was bored for a moment and never wanted to alarm the sage. I was guilty of my crime..."

"If you talk too much, I will really punish you. Let me take me to see you!" Li Zhi grabbed his wrist and walked towards the other courtyard.

"Ah, Your Majesty, I will greet all the veterans..."

Li Zhi frowned. Before he got angry, Li Qinzai's butt had been kicked hard.

Li Qinzai was furious and turned his head but saw Li Jie staring at him with a bad look: "I kicked him, what's the matter!"

Li Qinzai immediately turned off the engine: "Don't you, you're so timid. You always kicked it well, it's so satisfying."

A group of old killers behind him stroked their beards and nodded with a smile: "This is right, it is indeed very satisfying."

With Li Zhi, he walked towards the open space that had been selected outside the villa. Li Qinzai was unconsciously behind a few steps, and stood side by side with Li Ji, and whispered: "Grandpa, why should you run around yourself at your age? All the generals have witnessed it with their own eyes. What else do you have to worry about?"

Li Ji shook his head and said in a deep voice: "No, I must witness it with my own eyes."

Li Qinzai asked in confusion: "Why?"

Li Ji did not answer, but a sudden flash of inspiration in Li Qinzai's mind.

He remembered the history books of his previous life that during the Tang Dynasty's expedition to Goguryeo this time, the commander-in-chief of the army was Li Ji.

If nothing unexpected happens, this time Goguryeo finally destroyed the country, and Li Ji also completed his last achievement in his life, ending with the achievements of destroying the country, which has been spread throughout history for thousands of years.

Li Qinzai felt aroused in his heart and suddenly said, "Grandpa, during the Battle of Goguryeo, my grandson volunteered to follow the army."

Li Ji smiled and said, "Although you are not a greedy person, you are not even a hero. You have always been able to avoid war and killing. Why did you volunteer this time?"

Li Qinzai licked his dry lips and whispered: "Is this reason enough for grandson to witness his grandfather's deeds with his own eyes?"

Li Ji was silent for a moment and suddenly burst into laughter: "Okay, okay! My Li family man is a good person! Don't be timid!"

Li Qinzai was extremely glad that he created landmines on a whim before the Eastern Expedition, which added a little more victory to the Tang Dynasty's battle to destroy the country.

Li Zhi walked in front, turned his head and disappeared Li Qinzai, so he turned around and waved to him.

Li Qinzai stepped forward, and Li Zhi smiled and said, "I haven't asked you yet, why did you suddenly create this thing?"

Li Qinzai touched his nose and smiled bitterly: "My son said that it was almost the New Year, and there was no movement in the village, and it was not lively enough. So I created a landmine and gave him a fierce sound, which scared him..."

Before he finished speaking, he was kicked hard in the butt again. Without looking back, he knew that the murderer was Li Ji.

"The emperor asked and replied seriously to me!" Li Ji shouted behind him.

Li Qinzai had no choice but to say seriously: "Your Majesty is about to fight east. I am worried and thoughtful of you. I can't sleep at night. Fortunately, I am merciful to the heavens. A ray of spiritual light poured into my heavenly spiritual cover. I suddenly realized that I created this thing to help the king's army be invincible and to wipe out Goguryeo!"

Li Zhi was silent for a while and sighed: "Although I knew it was a fool of me, I have to say that these lies are actually quite popular, so I just think it is true."

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Chapter completed!