"That is the change in weapons, this big brother Meng Sheng, he is a member of the Mo family, the Mo family is a skilled craftsman, can build a lot of machinery, as long as these machinery are used in the war, it can greatly improve the combat effectiveness of the army, but also reduce casualties, not only that, I am ready to create a batch of thermal weapons, as long as we have thermal weapons, let alone one against two, it is no problem to use one against ten or even one against a hundred."

"Thermal weapons? What kind of weapon is this? ”

No one had ever heard of the term thermal weapon.

"The army's knives and guns are made of steel, and they can only be killed at close range, at most they only attack with crossbow arrows and bows and arrows, these are cold weapons, and hot weapons are the use of gunpowder, that is, those black powder I invented, and the weapons made with this gunpowder are called thermal weapons, these weapons shoot projectiles to attack, and the speed is far higher than that of bows and arrows and crossbow arrows, as long as there are hot weapons, then Liang Ji is not vulnerable at all."

"That's right, the kind of gunpowder you invented is indeed powerful, as long as there are enough of them, there is no problem in blowing up the city wall, so how to make these thermal weapons?"

When everyone heard this, they immediately became interested.

"Don't worry, I still need a lot of tests, by the way, why didn't I see Zu Chongzhi? Where did he go? ”

If you want to create advanced weapons, Zu Chongzhi and Meng Sheng are the key, Liu Yuetian has been back in Tianshui for half a day, but he hasn't seen each other.

"Alas, don't mention it, this third son has been doing some experiments day and night, today he said to do physical experiments, tomorrow he said chemical experiments, a few days ago he burned a room, if he wasn't found in time, his little life was almost lost, I saw that what he got was too dangerous, so I let him go to the dock fort, where it was quiet, there were not many people, I sent a dozen people to watch him to prevent accidents."

When it comes to Zu Chongzhi, he often has a headache when he encounters spring.

But as soon as he said me, there was a shout outside.

"Your Highness, you're finally back, how can this question be calculated!"

The person who came was Zu Chongzhi, I saw that his hair was scattered, the clothes on his body were folded, it seemed that he hadn't washed it for a long time, and as soon as he came in, a strong smell of sweat came over, and Sun Shangxiang on the side immediately covered his nose.

"Brother Zu...... Why do you look like this? ”

Liu Yuetian frowned.

"I haven't slept in two days, I just can't figure out this physics problem, quick, tell me quickly!"

Zu Chongzhi grabbed Liu Yuetian and handed a wooden board to the other party.

"Brother Zu, knowledge is very important, but the body is even more important! What kind of learning are you doing when your body collapses? ”

Liu Yuetian was a little worried about the other party's health, and no one could stand it if he didn't sleep for two days!

"It's okay, Brother Chang often stews ginseng soup for me, and after drinking ginseng soup, I have endless strength, not to mention not sleeping for two days, even if I don't sleep for ten days, it's no problem."

"Lord, fortunately, the ginseng snow lotus you planted is ripe, if there are no these precious medicinal materials, I don't think the third prince will survive for a month!"

"Brother Zu, I can tell you the result of this formula now, but after you know it, go take a shower immediately, and then give me a rest immediately, I will ask you to help me do great things in the future, if you fall ill, then go back to Zu Taishou!"

Liu Yuetian pretended to be angry and shouted.

"Okay, okay, don't talk that nonsense, you tell me first!"

Liu Yuetian just chatted a few strokes on the wooden board and calculated the answer to this question.

"It's that simple?"

Zu Chongzhi's eyes widened.

"Of course it's simple, it's just a force problem, you don't consider the friction of this pulley, this earth has a friction coefficient, as for the coefficient, we have to measure it by other methods."

"Coefficient of friction? Yes, there is indeed friction on the land, and the friction between the sand and the land is not the same, the sand is larger, and the smooth land is much smaller, why didn't I think of it, haha, I can be considered to understand .........! ”

As soon as Zu Chongzhi finished saying this, he collapsed to the ground with a pop, startling everyone, and seeing him lying on the ground and snoring, Liu Yue was relieved.

"Come on, carry the third son down, find a room for him to sleep, don't disturb him, let him sleep until he wakes up naturally, and let him take a bath when he gets up and come to see me again!"

Immediately, a group of servants carried Zu Chongzhi down carefully.

"This guy is really forgetting to sleep and eat when he starts to learn, you have to watch him in the future, don't get tired!"

At the end of Zu Chongzhi's learning, even Liu Yuetian sighed to himself, but only in this way can scientists achieve a great cause.

"Okay, it's not too early, let's go back and rest, we'll start all kinds of preparations tomorrow."

Liu Yuetian made a plan to eliminate Liang Ji, and at this time, Liang Ji was sitting in his luxurious mansion, and there were two people kneeling below, one was the great Honglu of the current dynasty, Zhu Deqiu, a high-ranking official of the second rank, and the other was his son Zhu Chao.

"General, you have to call the shots for my son! The king of Tianshui County led his troops to the Jingfu Governor's Mansion and raided my son's house without saying a word, and he robbed the 30,000 loads of grain and grass that he had hoarded in the warehouse for disaster relief, as well as the taxes that were about to be paid, a total of 40,000 taels of silver, all of which were gone, and they were all robbed by him! ”

Zhu Defat cried with tears and snot.

"What? Liu Yuetian led the troops to the Jingfu Governor's Mansion? How many centaurs? ”

Liang Ji was startled when he heard this.

"General Qiyu, there are more than a thousand people in total, they rushed into the city and killed my guards, and then looted the money and food, and beat me like this!"

Zhu Chao also cried and said, and raised his head to let the other party look at his face that was beaten like a pig's head.

"Led more than 1,000 people to the Jingfu Governor's Mansion to ransack, then Liu Yuetian is really rampant, do you have to rebel?"

Liang Ji was furious when he heard this.

Zhu Chao's father and son suddenly smiled, as long as Liang Ji was angry, he would definitely send troops to attack Tianshui, and then he would be able to get rid of this evil spirit in his heart, as for what the other party led more than a thousand troops to loot, it was naturally a nonsense they made up, and they couldn't say that the money that the other party robbed was exploited by themselves from the hands of the people.

"This Liu Yuetian, it seems that his wings are really hard, and now he has openly killed in the Jingfu region, could it be that he wants to learn from those chaotic armies?"

Liang Ji already knew about Liu Yuetian's capture of Tianshui, first of all, he didn't believe it, and after the scout sent quickly sent back the confirmed news, he wanted to immediately send troops to take this Tianshui back.

However, at that time, Liang Ji was preparing for his 50th birthday, and the amount of silver spent on this birthday alone was as much as 20 million, which was much larger than the emperor's birthday, plus he didn't take the other party seriously at all, how could a hairy child who had just become an adult have strength?

After the birthday banquet, he prepared for the sacrifice of King Zhou at the end of the year, and then it was the New Year, after everything was over, he had already forgotten about Liu Yuetian, and now he suddenly heard that Liu Yuetian actually led troops to the vicinity of Chang'an, which suddenly surprised him.

"Wang Tong, what are you doing as a captain? Then Liu Yuetian was killed near Chang'an, why don't you know? ”

Liang Ji yelled at Wang Tong who was standing aside.

"This ......... I haven't gotten any news of the attack! Zhu Defat, do you confirm that there are more than 1,000 people on the other side? ”

Wang Tong's face was flushed, if this matter was true, then his sin would be great.

This made Zhu Deqiu's father and son dumbfounded, they wanted to exaggerate indiscriminately to provoke Liang Ji, where did they think that there was also the responsibility of the captain here.

"Should...... Should be...... There are a lot of people......... I didn't see it clearly at the time! ”

Zhu Chao stammered.