Of course, it doesn't mean that this kind of crossbow arrow is invincible, as long as the other party is equipped with a shield to block it, and then it will have to fight in close combat, or hide behind the battlements when attacking the city, you can also avoid the attack of the crossbow arrows, the reason why you can attack the two towns of Nanfeng Longchuan so quickly, one is that the other party can't imagine that Liu Yuetian has such a weapon against the sky, and the other point is that the city defense of the two towns is too poor, if you change to a tall city wall like Chang'an, it will not be so easy.

But in any case, the appearance of repeaters was enough to break the situation of the war.

Fu Jian looked at this weapon and was afraid, if he didn't want to surrender, he was afraid that he would be slaughtered by the crossbow bloodily, more than 3,000 people in the Qin army were almost killed, and his little stragglers were directly wiped out.

Within four days, the three towns of Beidi, Longchuan and Nanfeng were all recovered by Liu Yuetian, and the three thousand Qin troops were wiped out, and almost no one escaped, this huge result greatly boosted the morale of the soldiers, but some soldiers also felt a little disappointed, and the complete suppression of advanced weapons such as crossbows made them feel that the battle was really a little boring, for the real soldiers of this era, the spray of plasma and face-to-face slashing was what they were really obsessed with, but Chang Yuchun and Shi Le told them that there would be more powerful weapons in the future, But don't think that you want to be lazy when you have a powerful weapon, only the hardest soldiers can gallop on the battlefield and get feats.

Fu Jian was also completely convinced after this battle, because he saw that there were not only crossbows, but also iron knives and chain mail, and there was also a team of 100 cavalry in Shile, these people were the elite of Shile's elite, everyone was riding a BMW chasing the wind, and the horses were all wearing heavy armor, such a force ran wildly, and the army of 10,000 people on the opposite side could not stop it.

Even crossbows, iron knives, chain mail, and hundreds of wind-chasing horses, even Fu Jian, whose hearts are higher than the sky, and the legendary Guiguzi felt suffocated.

"Where the fuck did all these weapons come from?"

If the advanced weapons made Fu Jian feel frightened, the life of the people of Tianshui made him completely surrender to Liu Yuetian, every ordinary person had a smile on his face, they were still working hard, but after returning home, they were full of hope, these hopes were within reach, not like at the beginning, hope only existed in dreams.

It can be said that the life of the common people of Tianshui has reached a prosperous age, no, even when King Wu of the Great Zhou Dynasty, the life of the common people cannot be compared with this, no wonder the people of the surrounding cities are all running here, as long as they are not fools, they will do this.

"Let the people live such a life, perhaps, this is the power of a saint!"

Fu Jian wants to become a generation of emperors and let the people of the world live a good life, but even if he does it, can he let the people live a life like today's water people?

Since you can't do it, then follow Liu Yuetian to learn!

Fu Jian completely surrendered, Liu Yuetian let him and Wang Meng manage the three towns, the three towns implement the same policy as Tianshui, and Fu Jian is responsible for recruiting the army, Wang Meng is stronger than Fu Jian for governing the people, and Fu Jian's training of the army is no less than Chang Yuchun and Shi Le, Wang Meng and Fu Jian can be said to be the best partners.

The three towns were recovered, Liu Yuetian no longer had any scruples, Tianshui began to develop rapidly, the fastest is Shen Fu, under his operation, merchants all over the country continue to station, mirrors and all kinds of glass have become a sought-after commodity, especially mirrors, almost let merchants around the country flock to it, every day a large amount of silver into the account, Tianshui's reputation is also spreading rapidly.

Half a month later, the first trebuchet was manufactured, more than three zhang high machinery stood in the open space, with Chang Yuchun's order, a large stone of hundreds of catties was thrown to a hundred zhang away, in the middle of an earthen wall, boom, can block the heavy cavalry charge of the earthen wall was directly smashed out of a big hole.

"Okay!"

The soldiers standing in the distance cheered in unison, and with this weapon, it was easy to storm the city.

"Chongzhi, your fixed pulley and movable pulley are really powerful, and the strength of this trebuchet has been doubled!"

Meng Sheng also waved his hand happily.

"Something is wrong!"

Zu Chongzhi on the side shook his head.

"Oh? What's wrong? ”

Meng Sheng asked.

"According to my calculations, this stone should have landed three feet at the west end of the earthen wall, but it actually hit, isn't it strange?"

"Chongzhi, this is the earthen wall you arranged, did you want it to fail from the beginning?"

Meng Sheng's eyes glared at the boss.

"That's not the point......... There must be a problem with the calculation of the integral function, you are responsible here, I have to go back and find the error! ”

After Zu Chongzhi finished speaking, he turned his head and left, grinding and chattering as he walked.

"This madman!"

For this scientific madman, only Liu Yuetian can make him obedient, and the rest of the people can also have some common language with Meng Sheng, and the others don't even pay attention to him, but now no one will underestimate him.

Most of the mechanical drawings drawn by the public transport squad have been modified by him, and the modified mechanical efficiency has been greatly improved, such as this trebuchet, the original design can only throw two hundred catties of stones to a hundred zhang away, but now, the range has been doubled, and this credit is all due to Zu Chongzhi's improvement.

"Brother Zu, your knowledge can't be in vain, you have to find a few apprentices to teach!"

Zu Chongzhi's desire to learn is too strong now, he has studied calculus, and he often nags, asking Liu Yuetian to make him a telescope to observe the moon, Liu Yuetian estimates that his knowledge has reached the university stage in his previous life at this time, but he is too focused on learning, and it is a waste not to teach this ability.

"Apprentice? Look at those stupid people, which one can learn my knowledge? Even Meng Sheng couldn't understand it, I think it's better to forget it, wasting time in vain. ”

Zu Chongzhi pursed his lips and said.

"Adults have fixed their thinking, of course they don't understand science, but the children in Tianshui City are not adults, their thinking is in the enlightenment stage, they can better accept scientific ideas, I am now ready to set up a science hall, specially for five-year-old children, you can teach them."

"Teaching children? I have to do a lot of experiments every day, so how can I spend time playing with my children? ”

Zu Chongzhi shook his head again and again.

"Brother Zu, the progress of science is by no means achieved overnight, nor can it be promoted by a certain person, which requires a large number of scientific talents to go forward, maybe it will take decades or hundreds of years to transform an era, you only care about your own research, you may be able to reach the realm of people looking up, but it will not bring much help to the development of society, you look at those schools, each family has a large number of believers, which can spread out and affect the direction of society, don't you always want everyone to recognize the power of science? This is the best opportunity. ”

Liu Yuetian's words made Zu Chongzhi moved, that's right, Zu Chongzhi has learned countless knowledge in just a few months, and he is improving every moment of every day, but the more he feels like this, the more lonely he feels, looking at the people around him, he can't understand the simplest common sense, which really makes him miserable.

"Your Highness, you are right......... Okay, Your Highness, go and prepare! ”

Zu Chongzhi finally figured it out.