After talking about the iron matter, Sun Xiangfu of course wants to talk about the crystal mine.

"You've all seen the crystal ore unloaded from the ship! After the melting, I made a few more sets of wooden molds according to the wood molds I asked the carpenter to carve, and there were also copper sleeves, both large and small. As for the crystal mirror surface of the flat plate, there is excess ore, and it is good to create two or three sides. ”

In fact, glass can be fired out with sand, but unfortunately Sun Xiangfu is not a science student, this thing can only give Ma Lin and Zhang Quan a direction, let them explore by themselves.

After the crystal ore is smelted and impurities, it is appropriate to obtain pure transparent crystal, make it into a concave and convex mirror, you can make a telescope, make a flat crystal, as long as you brush it with mercury or metal silver platinum on one side, you can make a mirror, of course, later generations have widely used the method of aluminum evaporation to make a higher quality mirror, but there is certainly no condition to meet this production method at present.

The craftsmen have never doubted the research direction proposed by Sun Xiangfu, because past experience tells them that they can succeed in the end.

With a telescope to observe celestial bodies and sea level, the accuracy of the sextant will be higher, of course, this thing is used in the military of this period, it is also very beneficial, Sun Xiangfu only let everyone make things, but did not let them assemble and shape, the final process, must be completed by himself, also to save his life, he needs to leave one or two treasures on his body, in case Li Shimin wants to kill himself, release it and say that he may be able to escape death.

When it comes to technology research and development, it is endless, but after half a day, Sun Xiangfu has almost finished explaining what he wants to explain, but everyone looks unwilling to leave.

"What, you're still okay?"

"That, village chief, in the future, can we call ourselves the children of the peasant sect?"

"Nongmen?"

At the mention of this stubble, Sun Xiangfu covered his forehead, remembering the story he told when he fooled Yu Xiu a few days ago, and now the people under him have read some enlightenment books, and they have become more shrewd, and after solving the problem of food and clothing, they follow Sun Xiangfu to learn a skill and pass it on from generation to generation.

Now, Li Shimin has ordered the book "Qi Min Yaoshu" to be listed as a must-read for local officials, and the author Jia Sixian's establishment of a course of agriculture has also been made public, of course, the purpose is not only to let the ruling local officials know more about agricultural production, but also to make everyone better understand why they did not kill Sun Xiangfu, the fourth generation of farmers.

However, there is a book in the peasant gate that must be read for those who are officials, which makes the status of the peasant gate instantly high, you know, before the Sui Dynasty imperial examination, only the four books and five classics were listed as required reading, although the style of the military prevailed after the founding of the Tang Dynasty, and did not respect Confucianism as much as the later Song and Ming dynasties, but Confucianism is still the unshakable mainstream, and Li Shimin praised the agricultural books as high as the Confucian classics, but there were not many people in the court who objected.

Because there are examples here, not to mention those courgettes and cotton, the wheat that nearly doubled the yield per mu was planted by Sun Xiangfu, a farmer! The rice with a yield of ten stones per mu was planted by Sun Xiangfu, a farmer!

In ancient times, the country was all based on agriculture, and who would dare to disrespect the classic book "Qi Min Yaoshu", which can greatly improve agricultural production?

Yes, recently in Chang'an, "Qi Min Yaoshu" is still hard to find, and the word "farmer" is also very popular in the community, in fact, all the things about Xu Xian's actor Sun Xiangfu are very popular in Chang'an, no way, star halo!

"That, you can be regarded as having learned some of my skills, and it is okay to call yourself so, but since you have entered the farm, you must remember the rules of the farm, take the development of agricultural production as your own responsibility, and do your best for the farming cause of the Han nation." Sun Xiangfu seemed to be very stern.

Hearing this, several people in the cell knelt down one after another and solemnly bowed to Sun Xiangfu, and since then, they have been regarded as one of the fifth-generation descendants of the farm.

Moreover, this is not the end, the next day, when Yu Xiuer came to deliver food to Sun Xiangfu, she brought all the children of Xingfu Village over, and they had a big agricultural character written on their cotton clothes, chests and backs with black plant dye, and came to the cell, and when they saw Sun Xiangfu, they bowed down.

"Uh, Xiu'er, is this the one that is sung?"

When Sun Xiangfu saw this scene, he was a little stunned.

"This is Grandpa's idea, he said, do this, even if Your Majesty has all kinds of reasons, he can't kill you."

Hearing this, Sun Xiangfu was stunned again, and then understood in his heart.

Unless the emperor wants to deny agriculture and rejuvenate the country, otherwise, Sun Xiangfu can not be easily executed, not to mention that although Sun Xiangfu has been, but his attainments in agriculture are unique in the world, he has real merits there, and the new rice seeds will benefit the people of the world, if you don't want to lose the hearts of the farmers in the world, Li Shimin must not kill him.

"Oh well! You little guys, even if you are the fifth-generation official disciples of my farming sect! Remember, our disciples of the agricultural sect must be able to farm, and after they go back, they will each choose a test field, three kinds of crops, and sow and cultivate them themselves, and when I come out one day, I will check your homework. ”

Sun Xiangfu, who wore shackles, was stabbed by the little guys, like Wang Fu and Wang Gui and their craftsmen, to put it bluntly, they just had a little bit of a relationship with Sun Xiangfu, Sun Erli, who had the highest level of farming, also because of his own lack of cultural skills, would soon produce bottlenecks, agricultural technology, not just some manual work, he is plant science and technology, only after these little guys who systematically learned the knowledge passed down by Sun Xiangfu grew up, it was possible to go further and further on the road of plant science.

Therefore, in the future, those people in Happy Village will only contribute more physical strength to the farming cause to help Sun Xiangfu promote the mature planting experience, and it is these little guys who really research and innovate, and Sun Xiangfu will also pass on more scientific knowledge to these little guys.

"Big brother, I want to choose the experimental field in Lingnan."

After the little ones got up after saluting, Sun Deshou was the first to say.

"In Lingnan? Why? Sun Xiangfu beckoned him over and asked.

"There are a lot of fruits and elephants in Lingnan, and I want to raise a ······ too."

Sun Xiangfu, who was just about to teach what he had learned to these little guys, instantly recognized the facts, they were still children and couldn't afford so much, Sun Deshou just saw Ah Yue riding a baby elephant wandering around Happy Village very majestic, so he wanted to go to Lingnan, and the fruits in Lingnan were really sweet.

"Go if you want! The eldest brother has a house over there, and there are a lot of fields, and it is also a good choice to spend the winter in Lingnan every year in the future. Sun Xiangfu said speechlessly.