"Hurry! Take it out quickly and let me see!" Li Shimin immediately said impatiently when he heard two other weapons made of gunpowder. He had always thought that gunpowder could only make fireworks, but he didn't expect that weapons made of gunpowder could be so powerful.

Yuwen Hu immediately opened the two boxes. At this time, Li Shimin was no longer willing to listen to Li Yan's dissuasion. He walked up to take a look. He found that one of them was similar to the blasting barrel just now, and it was also a thick and long round barrel. However, the barrel was pointed in front and a tail wing behind it, like an arrow that was magnified many times. In the other box was an iron ball larger than an adult's fist, and a wooden handle was added below. The surface of the iron ball was deliberately cast to make it uneven. I wonder what the reason was.

"Father, this is called a rocket. The front is an explosion part made of pig iron, and the back is a propulsion part made of bamboo and wood. When used, it ignites the leads behind to burn the gunpowder in the propulsion part and pushes the rocket forward. When landing, the gunpowder burns out, and it just can ignite the explosion part in front. The maximum range has not been tested, but it will definitely not be lower than two miles, and it has strong lethality to the enemy's cavalry and infantry." Li Yan first pointed to the first rocket and introduced.

"This second name is a grenade, which is a single-player throwing weapon." Li Yan continued to introduce, and picked up a grenade and pointed to the lead behind it. "Father, look, the use of this grenade is the same. Just ignite it and throw it out. This can be thrown out when the two armies intersect. It can not only kill the enemy, but also disrupt the opponent's formation. Whether it is a cavalry or an infantryman, it can be used."

The more Li Shimin heard, his eyes brighter and brighter. As soon as Li Yan finished speaking, he immediately urged him to test it. Yuwen Hu seemed a little hesitant, but at Li Yan's urging, he could only make someone set up the rocket launcher, adjust the angle, and put it on the northernmost side of the martial arts field and aim at the southernmost side to launch.

With Li Yan's order, the rocket blew out a ray of flame from behind with a "boom" and then flew out with a "whim". However, the stability of the rocket still needs to be resolved. It flew out in the air and was swirling. Moreover, the direction of the flight was not right, and it rushed towards the southwest wall.

A loud "boom~" sound was blown down under the dull eyes of Li Yan and Li Shimin and his son. The wall was immediately blown down.

"Ahem~ Father, the accuracy of this rocket is still a problem, but I believe that with the research of the craftsman's position, we can definitely find a solution. Now there is no problem using it for covering shooting." Li Yan stepped forward with a thick face and reported.

Yuwen Hu next to him looked helpless. He had already told Li Yan that the rocket had not been successfully researched, so it would be best to show it to His Majesty after a while, but Li Yan couldn't wait at all. After hearing that this thing could fly and maintain a rough direction, he immediately brought it over and it turned out to be what it is now.

"Well. It looks good, but the accuracy is almost OK. Just don't shoot into your own team." Li Shimin was very careful. It is normal for a new weapon to have some flaws. There will always be a way to solve it in the future. "Let's go and take a look."

"Father, don't run over, just use this to see!" A big embarrassment just now, of course, Li Yan had to save face immediately, and hurriedly took out the telescope in his arms and said, "Showing it up."

"Huh? What is this?" Li Shimin took the telescope and looked at it carefully, not knowing what this is for.

"Your Father, this is called a telescope. Put it in front of your eyes and you can see things in the distance very clearly." Li Yan said as he took the telescope and demonstrated it for a while, and pulled the retractable copper tube, adjusting the focal length, and then handed it to Li Shimin again.

Li Shimin imitated Li Yan's appearance and put the telescope in front of him and tried it. He was immediately startled and almost threw it away with his hand. Then he moved his eyes away from the lens and looked in the distance, then used the telescope, and tried it four or five times in a row before he finished.

"Hurry! Prepare horses for me!" Li Shimin held the telescope tightly and ordered behind him with a serious face. The guards brought the horses. Li Shimin flew onto the horse and ran to the landing place of the rocket. He found that it was exactly the same as what he saw in the telescope. Li Shimin ridden on the horse and laughed loudly. As a commander who led the army to fight, he understood the importance of the telescope more than anyone else. On the battlefield, the commander had this thing, which meant that he discovered the enemy situation a moment earlier than the opponent. Don't underestimate such a little time. Sometimes it is the key to determining the outcome of a war.

"Liulang, did you make this again?" Li Shimin rode on a horse and pulled the reins in front of Li Yan and smiled.

"My father guessed it well. In fact, Erchen has known about the way to make this telescope for a long time, but he has always been suffering from the lack of glass. Some time ago, Erchen immediately made a pair of glass from a Hu Shang, and today he specially presented it to his father." Li Yan also smiled slightly.

"I remember, you sent a lot of glass products to the palace a few days ago. Your mother liked them so much." Li Shimin threw her saddle and played with the telescope and smiled, "Well, this telescope is really a good thing. It can be used when marching and fighting!" Li Shimin sighed, and looked up at Li Yan.

Li Yan laughed in his heart. How could he not understand what Li Shimin meant? Although Li Shimin really wanted the technology of making telescopes, as a father, he was not easy to ask his son for it, so he deliberately said the above words.

"Since this thing is of great use to the state, I am willing to present the method of making this thing to my father!" Li Yan said tactfully. In fact, even if Li Shimin didn't say it, he would give it to him.

"Okay, my son is really a pillar of my Tang Dynasty!" Li Shimin praised happily when he heard this.

Although the rocket is a little flawed, Li Shimin is very satisfied with its range and power. When the Tang army faces the enemy in the future, it will directly launch a few rockets, first blow them up and then charge with the Tang Dynasty cavalry. Who else in the world can block the Tang Dynasty's soldiers? Thinking of the pride, Li Shimin couldn't help laughing again.

Next, Li Yan and Yu Wen Hu tested the power of grenades again. Because of the power of black gunpowder, the batch of grenades designed by Li Yan is much larger than those of later generations. Despite this, the power is still not as powerful as grenades in later generations, and the range of killing is smaller. However, at this stage, it is also a very powerful weapon.

Because the power of the grenade is limited and it is not as easy to see the effect as the blasting tube and rocket, Li Yan wanted to use some straw men as targets, but Li Shimin stopped him with a wave of his hand and directly asked some pigs and sheep to do the test. Li Yan was not a woman's kindness, so he waved his hand and asked several guards who had already prepared to come forward, and then according to what Li Yan taught just now, he ignited it and threw it among the tied animals.

"Boom boom~" Several guards kept igniting it repeatedly. The throwing action quickly threw a box of grenades clean. The animals in front could still make waves of miserable screams at the beginning. Several rounds of grenades came over and immediately became silent, until the dust fell, and a scene that shocked everyone appeared in front of them.

I saw that the live pigs and sheep just now had disappeared. What was presented to them was a piece of flipped land. The dark yellow soil was mixed with countless blood, broken bones and flesh, which looked tragic and shocking.

Li Shimin walked to this land that was still smoke, stepping on the wet soil and the smelly animal internal organs, without feeling disgusted at all. Instead, his face was filled with excitement, and even a hint of hideousness was still shaking his lips. From the core, Li Shimin was also a man of force supremeness. It is precisely because of this that the Tang army was so strong. Now with the epoch-making weapon of gunpowder, Li Shimin already vaguely felt that nothing in the world could stump him. Goguryeo, Tubo, Western Turks and other enemies, both bright and dark, were waiting for him to conquer with powerful force!

Thinking of this, Li Shimin felt that his warlike blood, which had been silent for many years, was boiling again, and he wished he could jump over the obstacles on the road ahead of the Tang Dynasty in one fell swoop.

"Yuwen Hu!" Li Shimin suddenly turned around and shouted.

"I'm here!" Yuwen Hu was shocked and immediately stood up to respond.

"You will immediately organize all the craftsmen involved in the production of gunpowder and these weapons to form a first hospital. I will give the name "Pili Court" to specialize in the research and production of gunpowder weapons. You will be fully managed by the Ministry of Works to allocate the manpower and materials you need. You will only be responsible to me in the future. In addition, all affairs in the Pili Court must be kept strictly confidential. Those who dare to disclose any secrets in the courtyard will be punished for treason!" Li Shimin ordered decisively.

"I obey the order!" Yuwen Hu was also excited and blushed. Although he was a general supervisor and was in a high position as a third-rank, he was actually only responsible for palace buildings and various instruments in the inner palace. To put it bluntly, he was a craftsman around the emperor and could not participate in government affairs at all. Therefore, he, the general supervisor, was even less powerful than a seventh-rank county magistrate. But the Pili Court is different. He mastered the research and production of gunpowder and related weapons. This is a position that makes everyone jealous. Being able to hold this position not only means that Your Majesty's affirmation of his talents, but also means that Your Majesty's trust in him. No wonder he was so excited?

"Liulang, you not only offer gunpowder, but also invented so many new weapons with infinite power." Li Shimin said this, glanced at Li Yan deeply, and then said, "Tell me, what do you want?"

"I have to submit my father to the duty of relieving my worries and being a son's minister, so how can I make any requests?" Although Li Yan was waiting for the emperor's father's words, he still had to be humble. Anyway, he offered so many things at once, and he was not afraid that his father would not reward him.

"Hmph, you don't know your nature as a father?" Li Shimin suddenly snorted coldly, "Show your kindness to me if you have nothing to do, either be traitor or steal. Put your colorful intestines away. If you have any requests, please boldly raise them. Don't circle like a woman!"

After hearing this, Li Yan smiled bitterly. Unexpectedly, the emperor's father really knew him. He suddenly realized that he had something to ask him for help. However, since Li Shimin made it clear, Li Yan simply gritted his teeth and stepped forward and said, "Report to my father, I want to change my fiefdom!"!~!
Chapter completed!