Even if he had been mentally prepared for a long time, Li Chunfeng was frightened by the scene inside the telescope.

"Daochang Li, this telescope needs to be seen from a distance."

"Far away? Yes, I said how did your nostrils get so big, so I'm going to go out and take a look. ”

Li Chunfeng only made up his mind a little to know the beauty of this telescope, and hurriedly ran out, and then he didn't come back for a long time.

Sun Xiangfu roughly guessed the reaction of the person who saw this magical item for the first time, and with the experience of assembling the first telescope, the subsequent assembly became faster.

"This sleeve is best proportioned, remember the scale, and when I go back, I will do some shrinking, and the lenses will be reduced in the same proportion, and I will get a few small ones to attach to the sextant. Also, melt away all the excess! Just make the best proportions. Sun Xiangfu picked out one of the hundreds of copper sleeves.

A simple concave-convex mirror can't actually make people see things too far away, so Sun Xiangfu asked the craftsmen to make a telescope tube that can be installed with a third convex lens, so that the inverted image formed when passing through the second convex mirror can be turned into a positive image, which greatly increases the visible distance of the telescope, and what Li Chunfeng is holding in his hand is just the simplest version of the telescope with only one concave and convex mirror, which can only magnify the object several times at most.

Holding the combination telescope in his hand, the first thing Sun Xiangfu observed was the tea on the desk, and the tiny decomposition particles in it could be clearly seen. Visually, this telescope can magnify objects at least forty times or more, of course, if the craftsman is given more time to be able to make a telescope with higher precision, or even an astronomical telescope that can observe celestial bodies, this requires continuous firing of crystals of different thicknesses and sizes to slowly explore, not a short period of time to complete.

However, a telescope with more than 40 times magnification is already a remarkable thing, and in good weather, it can help people see objects at least 800 to 1,000 meters away, and if the target is large enough in an open place, several kilometers is not a problem.

Imagine that in the open grassland, you can find the enemy's whereabouts from a few kilometers away, then, there is no such thing as an encounter, because everything will become an ambush battle, even if it is a war horse, it will take at least a quarter of an hour or two to run a distance of several kilometers, enough for the general to lay out a battle formation according to the number of enemies and the type of troops.

Of course, Sun Xiangfu didn't make a telescope for war, he needed more a microscope that could help him see the seed embryo and developmental changes, although he knew optics

principle, but there is still a long way to go in the process of manufacturing this thing, the initial investment will be huge, and the things created are also extremely huge, the microscope made purely by optics can magnify the object by 1,600 times, and Sun Xiangfu can almost be used for plant research as long as it is 160 times.

Sun Xiangfu showed his work to Ma Lin and Zhang Quan to try, and after a quarter of an hour, they realized how amazing the things they had made in the past few days were.

"The technology of sand firing glass needs to be further studied, so that we can have enough raw materials when studying this kind of telescope, in addition, the production process of the lens barrel still needs to be explored, I want to form a whole lens tube, and there is also a telescope that can change the focal length by adjusting the prismatic lens, so that the craftsmen can continue to explore, and the first to get out will be rewarded." Also, when I go back later, you can help me bring this gift to Xiu'er. ”

As he spoke, Sun Xiangfu gave the two of them a crystal glass mirror that had been brushed with mercury and was inlaid in a silver tray.

"This ······"

They all saw the action that Sun Xiangfu did just now, and they couldn't imagine that they could simply brush mercury on a flat transparent crystal plate, and put it in a thin silver frame, and they got a magical thing that made things show every detail.

"This thing is called a mirror, don't make it square when you rub the plate crystal in the future, it's rectangular! You can shine the whole person into it so big, as for the small one, it's round! At present, the cost of mirrors is too expensive, so remember to brush the fish glue on the back and then inlay it in the gold, silver and bronze mirror of just the right size, so as to prevent the mirror from breaking. Sun Xiangfu explained to the stunned two.

"Will all the rest of our crystal ore be used to make this mirror?" Zhang Quan stroked the mirror like a treasure.

"No, it's all used to make concave and convex lenses, and when you have fired pure transparent glass from sand, we will have the time to make this kind of mirror."

The role of the mirror is not much practical except for making people stinky and beautiful, but the telescope microscope is an important thing that can make people enter the microscopic world, once human beings enter the microcosm, it will be a big step forward on the road of science and technology, such as the telescope in Sun Xiangfu's hand, you can see the structure of blood cells, because the blood cells are already very large, and when he can distinguish the blood type, blood transfusion, which is widely used in medical treatment, can come in handy.

Regarding Sun Xiangfu's arrangement, Zhang Quan and Ma Lin basically obeyed blindly, and after wrapping the glass mirror in a thick cotton cloth, Zhang Quan still felt unsafe, so he carried it in his arms and covered his chest with both hands. This is the world's first mirror, Zhang Quan is cautious, and Sun Xiangfu thinks it's nothing.

After Ma Lin and Zhang Quan left, Sun Xiangfu was bored in the cell waiting for Li Chunfeng to come back, but this Taoist priest may have been addicted to play and didn't come back for a long time, but he asked Sun Xiangfu to wait for Lawyer Pei.

"Zhengming, I have already helped you do the training of spies, but my uncle is very old, so he only promised to help you train a group of people, at most about twenty people, and these people can basically be used after half a year." Seeing that no one was there, Lawyer Pei whispered beside Sun Xiangfu.

Sun Xiangfu didn't know which of his clan uncles was invited by Lawyer Pei at what cost, but he knew from the tone of his voice that he did his best.

"Well, twenty people is enough, by the way, you can take the things on the table and give them to your clan uncle, this thing may be of great use to him." Sun Xiangfu nodded at Lawyer Pei with affection, and then nodded to the case.

"What is this?" Lawyer Pei grabbed the telescope that was composed of multiple twisted sockets in his hand and asked.

"This thing is called a telescope, you can also call it a clairvoyant mirror, it can make people see things a few miles away, it should be of great help to reconnaissance intelligence, you look at one end of the mirror tube, look at the other end and know."

All right! Lawyer Pei, like Li Chunfeng, picked up the binoculars and looked directly at Sun Xiangfu, and this time, he saw a huge thick lip.

"This ······"

"Oh, it's magical! You'll want to look at him a few miles away, and this thick sleeve can be stretched to make it easy to adjust focus. ”

For the first generation of craftsmen's products, Sun Xiangfu naturally has no intention of retaining, too rough, and the focal length adjustment is too brief, in fact, it is just a magnifying glass with a large multiple, thinking about it, after a while, he can get the second-generation products that can adjust the focal length according to the distance of the target.

"God, it's just too godly, you know? With this, my lip-speaking uncle can know the conversations of people who are far away. ”

Professional intelligence spying people have some special skills, in addition to stealth whereabouts, this lip talk, is almost a compulsory course, because the target often does not let you get close to eavesdropping.

"Well, when you say that, I'm looking forward to these hands even more." When Sun Xiangfu heard this, he was a little surprised.

The asymmetry of the amount of information often determines the strength of a person, and people who have more information can easily play to death people who have less information, because more information means that there are more ways to think of it.

Li Shimin is because he has the largest amount of information, so that this turbulent dynasty can gradually stabilize, Sun Xiangfu is because there is not enough information, so he has been in a passive situation of being beaten, every time he is waiting for others to make a move against himself, he can see the move, passive response, this kind of days will be gone forever in half a year at most.

Therefore, Sun Xiangfu is more grateful to Lawyer Pei at the moment, he is the earliest friend of Sun Xiangfu, emotionally, he is deeper than the eldest Sun Chong, and he is not comparable to Wei Chi Baolin and Cheng Chumo, two young men who are not too sober.

"I will also participate in the battle of Shuozhou, so I am not here to say goodbye to you, the kind of cotton armor produced by your garment workshop, I customized two sets, tried it on, the effect is really good, if it doesn't snow, I will sweat when I wear it!"

"You're going to Shuozhou too? There doesn't seem to be a flying horse in the team! ”

"If I don't have a flying horse, I will apply to be transferred to the command of Ying Gong as a pawn! Anyway, I'm going to the battlefield. ”

After the military parade, even Li Xiaochang, the king of Ngee An, who originally planned to rebel in history, died down, and other rebel forces did not dare to come forward, so Li Shimin was already thinking about getting Pei Lian, who occupied the pit, down and giving it to his subordinates talented and practical officials, this process was two years earlier than in history.

If Pei Lin is dismissed, the end will not be very good, he is the mastermind who once plotted to rebel against Li Shimin, such a person, it is normal to have a person who died of illness in his old age, so Lawyer Pei, who wanted to save his father, wanted to do something.

"You are Pei Xiang's only son, and you are still a princess, even if Your Majesty disposes of Pei Xiang, he will not touch you for the sake of the emperor's face, why bother!" Sun Xiangfu, who roughly guessed that Li Shimin might make a move, persuaded.

"Hey, it's a lot of troubles to stay in Chang'an anyway, it's better to go to the battlefield for a walk, if you can wrap the body in horse leather, it will also fulfill my wish when I was a child."

Lawyer Pei said it freely, but Sun Xiangfu saw his sad back when he left, but unfortunately he himself is now a prisoner whose life and death are uncertain, even if he feels uncomfortable when he looks at it, he can't help it.

However, if things like this can be chosen by lawyer Pei himself, Li Shimin will be too merciful, is Li Shimin merciful? A man who kills his entire family even with his own brother and brother is not merciful. Therefore, Pei Lin must die, Lawyer Pei can't do anything unrecoverable, he died on the battlefield, the only thing that can be proved to the world is his Pei's loyalty to Li Tang, and this loyalty will only destroy the image of Renjun that Li Shimin has worked so hard to manage, so Li Shimin will not allow this situation to happen, then, his best ending should be to eat in Chang'an and wait for death for a lifetime.