Ten days later, deep in Mount Li.

Li Shimin brought Li Jing, Hou Junji, Cheng Yaojin and other groups of old people to gather in an unknown valley.

Cheng Yaojin looked at the empty valley as if he was still hangover and shouted: "Your Majesty, why did you call us all here this morning? Are you going to hunt?"

Li Jing looked at the situation in the valley and comforted Cheng Yaojin: "Know the truth, be more peaceful. Since Your Majesty calls us, there must be something important, otherwise how could he go to such a remote place."

Cheng Yaojin looked unhappy: "Hey, I can't say anything at home. I have to come to such a broken place. Does Your Majesty want to start a new business and become a bandit?"

"Okay, Zhijie, you will know what you are going to do in a while. Let's stay there first." Seeing that Cheng Yaojin became more and more distorted, Li Shimin waved his hand and drove him aside.

After waiting for a while, countless imperial guards rushed into the valley and inserted rows of straw men onto the hillside on one side.

"Hey, what are you doing? Are you really going to fight?" Seeing the mess in the valley, Cheng Yaojin became interested again and separated the crowd and ran to the front.

But I found that there were already a row of iron boxes on the side where everyone was standing. I guess it would be less than a hundred if I counted carefully.

"What is this?" Cheng Yaojin scratched his head and asked in confusion.

Li Muyun walked up from the foot of the mountain: "This is called a rocket, mainly used for cover-type fire cover."

"What, what protection?" Cheng Yaojin took out his ears.

"It's good to see General Cheng, and there will be a result in a while." Li Muyun didn't explain to Old Cheng anymore, turned around and whistled down.

Soon, a hundred soldiers came to the boxes, shook out the fire stick, ignited the leads at a corner of the box, and then ran backwards.

"Swish swish..." The sharp roar echoed throughout the valley as the soldiers left. The arms were thick and the ruler were long, and the strange arrows hit the other side of the valley two hundred steps away like meteors. A deafening explosion sounded in the old men's suspicious eyes.

The grass clippings were flying, destroying the dead. The grass man wearing simple leather armor flew everywhere in the explosion. The simple leather armor did not play any protective role, and the grass man inside completely scattered in the air.

A square formation, nearly five thousand grass people, were wiped out by the continuous explosions.

Cheng Yaojin opened his mouth wide and looked at everything in front of him in amazement, almost unable to believe his eyes.

Li Shimin's fists were clenched together, and his breathing became much heavier.

The other old talents were one or two of them, and their eyes were lit.

Li Muyun waited until the valley was quiet, and then came to Li Er: "Your Majesty, this is the rocket that will be improved after the surveillance. Although the accuracy is a little worse, this thing must win by quantity and use cover-type shooting, just to cover the battlefield, and then the arrow explodes and hurts people, so it does not need to be too accurate."

"This is gunpowder? Li Muyun, don't fool Lao Cheng, I know very well that gunpowder is useless except blowing up the city gate."

"That was not carefully developed before. In fact, gunpowder has many uses, not just for bombing the city gates."

Li Muyun said, waved to the big-headed soldiers below. It was not long since time had passed, and someone had already run up and handed him a black iron ball.

"What is this?" Li Er pushed Cheng Yaojin away and asked.

"I call it a meteor hammer." Li Muyun tied the black iron ball with a rope, ignited the fuse with the attention of a group of old guys, then took a few turns and let go, the iron ball fell into an uninhabited corner of the valley in an arc.

After a moment, there was a loud bang, and the soil splashed, and a shallow pit about a half foot appeared on the ground. Several small trees about four feet tall were tilted to the ground.

"This..., can this thing be used like this?" The old guys were more excited.

They are all old people, and they think all day long about how to kill more enemies. Now that they see the power of Rockets and Black Iron Balls, they are not calm.

However, Li Muyun's display seems to have not been completed. After the Rockets' demonstration was completed, thousands of straw men stood up on the opposite hillside. Countless black iron balls were thrown into the imperial guards, and the straw men fell back and forth again.

Then there was a gunpowder bag. With the help of the trencher, the gunpowder bag was thrown into the grass man formation...

There are also large black iron balls. These black iron balls are buried in the soil. After being ignited, the grass man on it turns into countless grass chips again.

Cheng Yaojin and several old guys who were not afraid of chaos seemed to meet their own mother, and they couldn't put down these weapons and rushed to the valley to play.

Li Shimin took Li Jing and others to sit together to discuss the functions of these thermal weapons.

Li Muyun asked proudly: "Brother, you won't say that gunpowder is useless this time, right?"

Li Shimin snorted: "After all, you kid did something useful, and didn't lose too much face for me."

"Brother, look at what you said, I'm not reliable in my waiting." Li Muyun smiled embarrassedly, then turned to look at Li Jing: "Duke of Wei, what do you think of these weapons?"

Li Jing stroked his beard and remained silent for a while. He had just seen the power of those hot weapons. At this time, he had inexplicably felt like a hero was old.

After a long time, he said slowly: "With these things, I guess the strategy will be useless in the future."

Li Muyun shook his head: "What you said is wrong. Weapons are dead and people live. To put it bluntly, how to use these things depends on people in the end, so the strategy is still useful, but with these weapons, our soldiers can sacrifice less."

Li Shimin agreed: "Well, this is reasonable. No matter how powerful the weapon is, it is still a human being. If it is used improperly, it will hurt people."

"What Your Majesty means is that you will get more of these weapons in the future?" Hou Junji asked.

"This is inevitable. If you don't use good weapons in military terms, wouldn't it be a waste."

"But if I use these things for a long time, I am worried that the soldiers will lose their blood and rely too much on... gunpowder."

Hou Junji and Li Jing looked at each other and expressed their concerns.

"Haha..." Li Shimin smiled and shook his head: "Junji, you're thinking too much. If I'm not mistaken with such a weapon, I can only equip the troops in a small amount. The real combat power of my Tang Dynasty still depends on the swords in the hands of the soldiers."

"This..., why?"

Li Shimin did not answer Hou Junji, but looked at Li Muyun: "Tell me, how long do you think these things will take if they are equipped with the troops?"

"In terms of time, it will take at least five to ten years, because the troops need training. Although these weapons are powerful enough, they are double-edged swords that can hurt the enemy and can also hurt them. If used improperly, we may be the first one to be hurt."
Chapter completed!