"Quick! Hurry up and take it out for me to see! Hearing the other two weapons made of gunpowder, Li Shimin immediately said impatiently, he had always thought that gunpowder could only be used to 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 no longer refused to listen to Li Su's persuasion, and walked up to take a look, and found that one of them was similar to the blasting barrel just now, and it was also a thick and long barrel, but the front of this barrel was pointed, and there was a tail wing behind, like an arrow magnified many times, and the other box was an iron ball larger than an adult's fist, and a wooden handle was added below, and the surface of the iron ball was deliberately cast into an uneven appearance. I don't understand why.

"Father's 115th chapter has nothing to do, either treachery or theft, this is called a rocket, the front is an explosion made of pig iron, and the back is a propulsion made of bamboo and wood, when used, ignite the fuse behind it, so that the gunpowder of the propulsion part burns, and push the rocket to fly forward, and when it lands, the gunpowder burns out, just enough to ignite the explosion in front, the maximum range has not been tested, but it will definitely not be less than two miles, and it has a strong lethality to the enemy's cavalry and infantry." Li Yu first pointed to the first rocket and introduced.

"This second one is called a grenade, and it's a weapon that is thrown by a single person." Li Su continued to introduce, and picked up a grenade, pointed to the lead behind him, "Father, you see, the use of this grenade is the same, just throw it out after igniting it, this can be used to throw it when the two armies intersect, not only can kill and injure the enemy, but also can disrupt the opponent's corner, whether it is cavalry or infantry, it can be used." ”

The more Li Shimin's eyes became brighter the more he listened, and as soon as Li Su's words fell, he immediately urged him to test it. Yuwen Hu seemed to be a little hesitant, but under Li Su's urging, he could only ask people to set up the rack for launching the rocket and adjust the angle. Place it on the northernmost edge of the arena and aim for the southernmost point to launch.

With Li Su's order, the 115th chapter of the rocket's 'boom' was courteous, and a stream of flames erupted from behind with a 'treacherous or thief', and then flew out with a 'whoosh', but the stability of the rocket still needs to be solved, and it flew out with a whirl in the air, and the direction of the flight was not right, and it actually rushed towards the wall in the southwest direction.

"Boom~" made a loud noise, under the dull gaze of Li Su and Li Shimin, father and son. A large section of the wall was immediately blown down.

"Ahem~, Father, the accuracy of this rocket is still a problem, but I believe that with the study of the craftsman's position. A solution can definitely be found, and now there is no problem with it for covered shooting. Li Su cheekily stepped forward to report.

Yuwen Hu next to him was helpless, he had already told Li Su that this rocket had not been successfully researched, so it was best to show it to His Majesty after a while, but Li Su couldn't wait at all, after hearing that this thing could fly and maintain the general direction, he immediately brought it over, and the result became what it is now.

"Hmm. It looks like it's a good power, and the accuracy doesn't matter, as long as you don't shoot into your own team. "Li Shimin is very open, it is normal for the new weapon to be a little flawed, there will always be a way to solve it in the future," go. Go with me and see. ”

"Father, you don't have to run over again, just use this to see it!" There was a big mess just now, of course, Li Su wanted to save face immediately, and hurriedly took out the telescope in his arms. Offer it and say.

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

"Father, this is called a telescope. If you put it in front of your eyes, you can see things in the distance very clearly. Li Su said and took the telescope to demonstrate, and pulled the retractable copper tube, adjusted the focal length, and then handed it to Li Shimin.

Li Shimin followed Li Su's example, put the telescope in front of his eyes and tried it, but he was immediately startled, and his hand shook and he almost threw the telescope. Then he took his eyes off the camera and looked into the distance, then looked through the binoculars, and tried four or five times in a row before he gave up.

"Quick! Prepare a horse for me! Li Shimin clutched the binoculars tightly and commanded behind him with a serious face. The guards brought the horses, Li Shimin flew on the horse, ran quickly to the landing place of the rocket, and found that it was exactly the same as what he saw in the telescope, Li Shimin laughed on the horse, as a commander who led the troops to fight, he understood the importance of the telescope better than anyone else, on the battlefield, the commander has this thing, which means that the enemy is discovered a moment earlier than the other party, don't underestimate such a little time, sometimes it is the key to determining the outcome of a war.

"Rokuro, you made this again, right?" Li Shimin rode over at a gallop, grabbed the reins in front of Li Su and smiled.

"My father guessed well, in fact, the practice of this telescope has long been known to the son, but he has been suffering from the lack of glass, some time ago after the son got the method of making glass from a Hu merchant, he immediately made a pair of glass, and today he specially dedicated it to his father." Li Su also smiled slightly.

"I remember, a few days ago you sent a lot of glass products to the palace, and your mother likes it so much." Li Shimin threw the saddle and dismounted, played with the telescope and said with a smile, "Well, this telescope is really a good thing, when the army is marching and fighting, it can come in handy!" Li Shimin sighed and glanced up at Li Su.

Li Su laughed secretly in his heart, how could he not understand what Li Shimin meant? Although Li Shimin wanted the production technology of this telescope very much, as a father, it was difficult for him to ask his son for it, so he deliberately said the above words.

"Since this thing is of great use to the state, the son is willing to dedicate the production method of this thing to his father!" Li Su also said with interest, in fact, even if Li Shimin didn't say it, he would send it the same.

"Okay, Wu'er is really my pillar of the Tang Dynasty!" When Li Shimin heard this, he praised happily.

Although the rocket is a little flawed, Li Shimin is very satisfied with its range and power, thinking that when the Datang army faces the enemy in the future, he will directly release a few rounds of rockets, first blow up their personal horses, and then use the iron cavalry of Datang to charge, who else in this world can stop my Datang soldiers? Thinking of the smugness, Li Shimin couldn't help but laugh again.

Next, Li Su and Yuwen Hu tested the power of the grenade again, because limited by the power of black powder, the batch of grenades designed by Li Su was much larger than the grenades of later generations, despite this, the power still could not reach the power of the grenades of later generations, and the killing range was smaller, but at this stage, it was also a very powerful weapon.

Because the power of the grenade is limited, it is not as easy to see the effect as blasters and rockets, so Li Su wanted to engage some straw men as targets, but Li Shimin stopped him with a wave of his hand, and directly asked people to find some pigs and sheep to do ** experiments. Li Su is not a woman's kindness, and with a wave of his hand, he asked a few guards who had been prepared to step forward, and then according to what Li Su taught him just now, he lit it and threw it between the animals that were chained.

"Boom~" Several guards kept repeating the action of igniting and throwing, and soon threw a box of grenades clean, and the animals in front of them could still make a miserable cry at first, and several rounds of grenades came over, and immediately became silent, until the dust fell, and a picture that shocked everyone appeared in front of them.

I saw that the live pigs and sheep just now had disappeared, and what appeared in front of them was a land that had been turned over, and 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 smoking, stepping on the wet soil and smelly animal entrails, and did not feel disgusted at all, but his face was full of excitement, and even there was a trace of hideousness in the corners of his mouth. In his bones, Li Shimin is also a person who puts force first, and it is precisely because of this that the army of the Tang Dynasty will be so strong, and now with the epoch-making weapon of gunpowder, Li Shimin has vaguely felt that nothing in this world can stump him, Goguryeo, Tubo, Western Turks, etc., these enemies are either bright or dark, are waiting for themselves to conquer with strong force!

Thinking of this, Li Shimin felt that the belligerent blood that he had been dormant for many years was boiling again, and he couldn't wait to leap on the horse now and sweep away the obstacles on the way of Datang's progress in one fell swoop.

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

"The minister is here!" Yuwen Hu's face was shocked, and he immediately stood up and responded.

"You immediately organize all the craftsmen involved in the production of gunpowder and these weapons in the prison and form an independent courtyard, which I have given the name 'Thunderbolt Academy', which is in charge of the research and production of gunpowder weapons, and you have full authority to manage it, and I will ask the Ministry of Industry to allocate the manpower and materials you need, and you will only be responsible for me in the future. In addition, all affairs in the Perak Courtyard must be kept strictly confidential, and anyone who dares to divulge any secrets in the Courtyard will be punished for treason! Li Shimin commanded categorically.

"Wechen obeys!" Yuwen Hu was also flushed with excitement, don't look at him as a master craftsman who will be a supervisor, and he is also in a high position from the third grade, but in fact, he is only responsible for the palace building and various utensils in the inner palace, to put it bluntly, he is just a craftsman next to the emperor, and he can't participate in government affairs at all, so he, the master craftsman who will be a supervisor, is not even as powerful as a seven-rank county order. But the Perak Academy is different, mastering the research and production of gunpowder and related weapons, this is a position that makes everyone blush, being able to hold this position not only means that His Majesty affirms his talents, but also means His Majesty's trust in himself, no wonder he is so excited?

"Rokuro, not only did you offer gunpowder, but you also invented so many powerful new weapons." When Li Shimin said this, he glanced at Li Su deeply, and then said, "Say, what do you want?" ”

"Enlighten your father, and it is your duty to relieve your father's worries and be your son's minister, where do you dare to make any requests?" Although Li Su 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, it's not clear what you're a father about?" Li Shimin suddenly snorted coldly, "Nothing to be courteous, either a traitor or a thief, put away your flower intestines, and boldly put forward any requests, don't go around in circles like a woman!" ”

Li Su smiled bitterly after hearing this, he didn't expect the emperor's father to really understand himself, and he immediately saw that he had something to ask him, but since Li Shimin had made his words clear, Li Su simply gritted his teeth and took a step forward and said: "Enlighten the emperor, the son wants to change the fief!" ”！！！