In a small courtyard on the outskirts of Tianjin, Xu Guangqi, who is close to the age of six, is sitting in the small courtyard, and he has been passing the time like this since Tongzhou resigned and was idle. Come to think of it, how can you let a talented person stay at home, it's not bad if you are not depressed and depressed.

On this day, two horses came to the door, and immediately two officials, one recognized as a local, and the other as a stranger.

The local one shouted when he entered the door: "Lord Xu, Lord Xu." This old man has something to do with you. ”

The stranger said, "You are Lord Xu?" ”

Xu Guangqi responded: "The grass people are Xu Guangqi, I don't know what this adult is looking for the grass people?" ”

"Xu Guangqi, please take the order." The stranger shouted, so he untied the burden from his back and respectfully handed it to Xu Guangqi, Xu Guangqi wondered, how could he ask for the order, knelt down and waited to listen to the holy decree, but Qin sent over a burden.

took the burden and opened it to see that there was a bamboo tube inside, and after seeing the bamboo tube clearly, Xu Guangqi was taken aback. Because this is the telescope built by Zhu Youxiao and the craftsmen, there is a will below: I have known that Mr. is talented since I was a child, but the emperor does not like it, so I am willing to be mediocre. Now I have first ascended to the great treasure, and a hundred wastes are waiting to be revived. The Liaodong Jurchens are particularly rampant. I want to cure the sharp weapon to destroy this generation, and I hope that Mr. will enter Beijing and go to the king together.

Xu Guangqi was overjoyed after reading the letter, and finally waited for the time when he wanted to show his talent, originally everyone thought that the emperor was just a naughty boy who was a little carpenter, and liked to tinker with some strange and obscene wooden things, in fact, these things also contain a certain amount of scientific knowledge, it seems that this little emperor is not ambitious, and it is very deep, in fact, this is Xu Guangqi overestimating Zhu Youxiao, if it weren't for Zhu Youxiao's filial piety, he would still be a mediocre emperor. Since the new emperor appreciated his talent and had such a Kit Kat telescope as a token, Xu Guangqi naturally no longer hesitated, immediately packed up, and went to Beijing with Qin.

The same thing happened in She County, Anhui Province, where Bi Maokang saw a miniature "two-kicker" launcher; In Fengxin, Jiangxi, Song Yingxing, who had just returned home from the capital last year, saw a miniature water wheel. The two, like Xu Guangqi, immediately packed their luggage and went to Beijing with Qin.

In the small spring of humanitarian October, Zhu Youxiao has been on the throne for more than a month, and he has been busy in this month or so, rectifying the inner palace and coordinating ministers; Sun Chengzong has gone to Liaodong; Jin Yiwei and Dongchang are still running for Xiong Tingbi's case; And Nurhachi in Liaodong is licking the wounds of being defeated by Xiong Tingbi not long ago, in order to accumulate strength and prepare to make a comeback next year, but he doesn't know if he can succeed.

One day at the end of October, it was a beautiful day, and in the Huangzhuang on the outskirts of the capital, Zhu Youxiao was walking and talking casually with Xu Guangqi, Song Yingxing, Bi Maokang, craftsman Zhu Ling, and Lei Mingtian, the head of the firearms factory. Zhu Youxiao has seen a lot of crops introduced from abroad in recent years, such as corn, sweet potatoes, potatoes, tomatoes, and peanuts. Except for sweet potatoes, which have been cultivated along the southeast coast, other crops have not yet been widely promoted.

Sweet potatoes Xu Guangqi is not rare, he once did an article on "Sweet Potato Order", but he is not very familiar with the growth environment of sweet potatoes, in fact, the barren land in the north is more suitable for the growth of sweet potatoes than the humid climate in coastal areas, like potatoes. Corn, on the other hand, is suitable for cultivation everywhere, and the more fertile the soil, the higher the yield. Tomatoes like a humid climate and grow well in summer, but now they are only cultivated as flowers and placed in flower beds.

It should be said that Zhu Youxiao came to Huangzhuang today for a purpose, whether it is Xu Guangqi or Song Yingxing, they can only be regarded as agricultural theorists, they only summarized the experience of others and edited the book, and they have not personally tried so many things, and it can also be said that they edited the book in their spare time.

Zhu Youxiao is a child who grew up in the countryside, he knows all these full sets of farm work, and he knows how to make it delicious. His purpose today is to tell them how to plant, store, and eat these high-yield crops, and then let them write them into written words to teach more people, so as to survive the famine years in the last years of the Ming Dynasty and save more lives for the Ming Dynasty.

Zhu Youxiao has decided that all the Jinshi in Enke next year must be young people, young people who know how to be flexible, and no nerd over forty years old will be taken, and then let the Ministry of Officials organize an official training school, and he will be the principal of this school, there are currently two teachers, Xu Guangqi and Song Yingxing may also add Zhou Jiamo. In addition, Xiucai and Tongsheng who are no more than 20 years old are selected from all over the country, of course, they are all from poor families, enter the newly opened vocational and technical school, and still serve as the principal, and the teachers in addition to Xu Guangqi and Song Yingxing, they also have to hire Li Zhizao and some missionaries, and they also plan to hire the descendants of Cheng Dawei, the author of "The Algorithm Tongzong", the descendants of Li Shizhen, etc., to build this school into a world-class comprehensive university, so as to improve the international competitiveness of the Ming Dynasty and promote the scientific and technological progress of the Ming Dynasty. Thus making China the most developed country in the world.

Zhu Youxiao decided to stay in Huangzhuang for one night, communicate well with the scientific experts of this era, shorten the distance with them, and make them feel that they are not only the emperor on top, but also their peers, so that they will no longer be restrained when communicating with them in the future, and they can explain what they say when they don't understand.

Zhu Youxiao gave full play to his skills, stuffed a small kiln of sweet potatoes in the field, made a pot of cold tomatoes with white sugar, braised a pot of potato stewed beef, stewed a pot of carrots and mutton, fried a plate of old vinegared peanuts, and added chili peppers to it, and the chili peppers were fried in lard. Looking at these big cows again, I was a little surprised to see Zhu Youxiao directing the chefs to cook just now, and my saliva flowed out when I smelled the smell. Now that the meal is open, Zhu Youxiao is allowed to eat the first bite of each dish, and then he eats it cleanly, and even the youngest Song Yingxing grabbed a chopstick with Zhu Youxiao, and jumped off him, which made Zhu Youxiao happy and made everyone laugh.

In the evening, the monarchs and ministers talked at night. The first thing to talk about was the issue of ordnance, and Lei Mingtian spoke first: "The 'two kicking' small cannon developed by the minister has been initially successful, but there are still some minor problems, one is the problem of accuracy, because the sound at the bottom will break the paper, so it is not easy to shoot at the target accurately. The second is that the visual distance is not easy to grasp, Zhang San said that the target is 100 steps, Li Si said 120 steps, so that the length of the bottom line is not easy to grasp, and the waste of ammunition when using it is not counted, and it is easy to make the enemy prepared, lose the suddenness, and see if the adult has a solution. ”

Bi Maokang thought for a while and said: "If you make a sharp one out of hard mud or stone in the front, and then add one or three hard iron pieces in the middle of the middle compartment, I think the arrows we shoot will have feathers on the back in order to keep them stable and hit the target, or they will be called eagle feathers, which may be better." ”

Hey, it's really a big cow who can make a flintlock pistol, and it solves the problem in one fell swoop.

"Thank you, Master Bi, I'll go back and try, and I'll kowtow to you if I succeed."

"Go, go. Kowtow, brother, we are all contributing to the emperor, and we should all do it. ”

Xu Guangqi said: "The problem of estimating the distance is related to the individual's eyesight and judgment, if you want to calculate the accurate distance, you need to calculate, which has to make a tool, this tool is called a rangefinder, which can calculate a more accurate distance according to the calculation method of the Pythagorean system." ”

Cow, big cow, the rangefinder was thought of in this era, and if this thing is manufactured, whether it is a land battle or a naval battle in the future, it will definitely be a sharp weapon for attacking the enemy.

"The best planner in my dynasty is Cheng Dawei, it's a pity that he has passed away, but there should be people who are good at planning among his descendants, "Algorithm Tongzong" is edited by Cheng Dawei, or we can use this book to cultivate talents in this area." Xu Guangqi continued.

Zhu Youxiao said to Lei Mingtian: "You will continue to develop different formulas in the future, it is said that the larger the proportion of nitrate in *, the stronger the explosive power, and the higher the purity of the nitrate, the stronger the explosive force." You can try to purify it by boiling nitrate, the specific method is to melt the nitrate into the water and add some plant ash, then stir evenly, and then boil it in a pot, stop the fire when there are crystals at the bottom, reduce the temperature, and then take the crystals to try it, but you must be careful, handle it gently, and try it in a small dose first, so as not to explode. ”