"Your Highness, just now you said that the second question is closely related to the first question, it should be the problem of this positioning, right?" Li Chunfeng and the three of them discussed for a few words, and finally found that the only way they could think of was to locate them through celestial bodies such as the sun, moon and stars. And Li Chunfeng thought of Li Su's words just now, so he turned to him and asked.

"Hehe, Brother Chunfeng guessed well, that's the problem." Li Su smiled.

"Oh? What does Rokuro think? Yuan Tiangang's eyes lit up, and he asked with some expectation, although Li Su may not be as good as them in professional knowledge, but some ideas are creating a precedent, which makes people feel suddenly enlightened after listening to it.

"For this issue, in fact, my thoughts are similar to yours, and they are all about positioning them with stars." Li Su said honestly, Yuan Tiangang Chapter 27 The Prototype of the Academy of Sciences and others couldn't help but feel a little disappointed when they heard it, but then Li Su said, "But if this kind of calculation is only observed and calculated by people, it will be too time-consuming and labor-intensive." ”

"Rokuro, what do you mean?" Yifan was the youngest, but he reacted the fastest, blinking his big sparkling eyes and asked.

"I know that there is an instrument called a sextant, as long as the average person can be familiar with its operation, and then after a simple calculation, you can get the longitude and latitude of your position, but unfortunately I don't know the working principle and structure of this instrument, so I want Brother Chunfeng to help develop it." Li Su said with a smile, there is only a compass when sailing, and it is good if it is closer, but if you want to sail on the open ocean, you must have a positioning sextant.

"Sextant?" Yuan Tiangang and Li Chunfeng had heard of this name for the first time, but this sextant could measure latitude and longitude. That's a great invention!

"Rokuro, where did you learn about this instrument, can you get one for us to study!" Li Chunfeng frowned and asked, with his understanding of the latitude and longitude measurement method, he knew that this sextant must be a very complex instrument, if it was only based on their imagination, then he didn't know when he would have to study it before he could have some clues about the prototype of the Chapter 27 Academy of Sciences?

"I'm sorry about this. I also saw it from a remnant map, and I guess I can't find it in the whole world. Li Su spread his hands and said apologetically. The sextant was very common in later marine applications, and even in the electronic age, it was still very useful. But it is unlikely that such a thing could be found on Earth in the seventh century A.D.

Hearing Li Su's answer, Li Chunfeng and the three of them were all disappointed, but they only heard Li Su continue: "Although what I see is only a residual picture, several key components are still very clear, the main body of this sextant is a circular sixth, and there is also a telescope, a translucent glass piece that can turn the head, which is probably these things." ”

Li Su told the main components of the sextant very irresponsibly, not that he deliberately embarrassed Li Chunfeng. After all, he was just an ordinary person in his previous life, and he had never had the opportunity to contact the sextant at all, and what he knew was still seen from a nautical game, which split the sextant into several parts. Then let the players find and assemble them, Li Su only remembers these three main components now, at least the installation of these three parts and the operation of the instrument, that is what Li Chunfeng and they have to do.

After listening to Li Su's introduction, Li Chunfeng's brows temporarily stretched, and he had seen the telescope in Chang'an. And he also deliberately went to the Ministry of Industry to produce the telescope to order a multiple, for the observation of celestial bodies, through the telescope, let him understand a lot of things, such as the moon turned out to be an ugly big stone, and the observation of Venus, Jupiter and other stars has also made a lot of progress, and found a lot of stars that could not be seen before.

"Your Highness, Chunfeng already has a little clue, please ask Your Highness to allocate some master craftsmen to jointly assist Chunfeng in completing the development of this sextant." Li Chunfeng took a deep breath, stepped forward and said, and the official title of Li Su in his mouth also became very solemn.

"Okay, I'm going to set up an academy of sciences in Dengzhou soon, which is dedicated to the study of various knowledge and tools, if Brother Chunfeng doesn't give up, can I take the position of dean?" Li Su asked with an earnest face, but when he knew that Li Chunfeng was in Zhao Fufu's mansion, he was already beating his idea.

Hearing Li Su's invitation, Li Chunfeng's face was embarrassed, and he bowed back and said, "Your Highness, Xia Guan is also the post of Taishi Ling, and it is really not good to take up another position." ”

"Hehe, Brother Chunfeng misunderstood, this Academy of Sciences is not a government agency, it is like a academy, it belongs to a private academic research institution, it is full of talents in all aspects, it can be full-time or part-time, and even if conditions permit it in the future, some students will be recruited, of course, there are not many people in it now, but if there are top talents like Yuan Daochang and Brother Chunfeng to join, it will definitely attract more people to join." Li Su has great ambitions, not only wants to recruit Li Chunfeng to the Academy of Sciences, but even Yuan Tiangang wants to pull him in together.

"So what, it's better to be respectful than to obey your fate, but you don't dare to be the dean, so it's better for Master Yuan to take it!" As soon as Li Chunfeng heard that the Academy of Sciences was a non-governmental academic institution similar to the academy, he immediately relieved his heart, and many great Confucians in the court would occasionally come to the academy to teach, and even the imperial court encouraged this practice.

When Yuan Tiangang heard Li Chunfeng recommend himself, he immediately shook his head and shirked: "I can't do it, I'm old, and I really don't have the energy to manage the college." Second, my proficient physiognomy is not very helpful in making weapons, and arithmetic and astronomy are not as proficient as Chunfeng, so it is up to you to take the role, and I don't need to join the Academy of Sciences, as long as there is a need, just call me over to help. ”

What Yuan Tiangang said was very sincere, and it was all true, Li Chunfeng thought about it for a while, and finally agreed. However, he came out this time to take a half-year vacation, and he will return to Chang'an to continue his post when it expires. This doesn't matter, Li Su proposed to let Li Chunfeng study in Dengzhou first, it is best to study it within half a year, if the research can't be done, you can also take the research materials back to Chang'an to continue research, anyway, for the time being, Li Su has no plans to sail in the ocean. As for Yuan Tiangang, Li Su gave him the title of consultant, and he was a respected supernumerary.

"Oh, by the way, Yifan is also going to join the Academy of Sciences, let's be a vice president for the time being, learn more from your master and senior brother, and after Brother Chunfeng leaves, you will take over the position of dean." After getting rid of Li Chunfeng, Li Su suddenly said to Yifan again.

"I didn't promise to go to the Academy of Sciences!" As soon as Yifan heard that he was going to go, he immediately said in a loud voice, and at the same time glanced at Zhao Fu next to him. Li Su had already told her about the Academy of Sciences, and she wanted to go too, but Zhao Fu disagreed.

"This time, I borrowed a lot of top foundry craftsmen from the Ministry of Engineering, and I can definitely help a lot in the trial production of the steam engine, and now they are all arranged by me to enter the Academy of Sciences, you really don't want to join?" Li Su understood Yifan's thoughts, and his eyes were also staring at Zhao Fu when he spoke, and there was a hint of unkindness in his eyes. And hearing that the casting craftsman promised by Li Su also came, Yifan was even more anxious in his heart, and looked at his father Zhao Fu pitifully.

Under the threatening gaze of his daughter and Li Su, Zhao Fu had no choice but to succumb and said: "Thanks to His Royal Highness's love, you can go to that academy of sciences as soon as you sail, but you must pay attention to safety, that steam engine is not very reliable!" ”

Although Zhao Fu said about the steam engine in the end, there seemed to be a reference in his words, but Li Su didn't care, as long as he could dig up talents. Although the Academy of Sciences is still only a prototype, and there are not even a few people, as long as there is a foundation and strong support, it will definitely be able to shine one day.

A few days later, Lu Qing and others, who had completed the rehearsal, finally began the formal trial voyage, and at the same time shouldered the heavy responsibility of opening up new routes, if this trip was successful, it would not only greatly shorten the distance of the northern route, but also allow all maritime merchants to save a lot of costs, so many people were very concerned about the success or failure of their trip.

Li Su wanted to hold a send-off ceremony for Lu Qing and them, but they were rejected by Lu Qing, according to their words, their own group of people did not make an inch, and they couldn't afford this kind of gift, and it was not too late to hold a grand ceremony when they successfully returned to the sea.

Li Su can also understand what Lu Qing and others said, after all, if a grand send-off ceremony is held, although it can bring them some encouragement, it will also bring them a lot of pressure. This was the first voyage of the new ship, and it would be better to make it easier for the crew, so they agreed.

But although Li Su did not hold a ceremony, but in the setting sail, countless people who got the news still ran to the dock, a large number of men and women, ready to see off Lu Qing and them in person, although both sides did not know each other, but the interests were the same, so these people were very enthusiastic, prepared a lot of food or supplies, and sent them to the two ships, and those who could not be sent were thrown directly to the top, and the crew on the ship did not recognize their lives, and they mingled with the people below, and from time to time caught the food that flew and stuffed it into their mouths, The scene was very lively.

Li Su and Wen Xin stood at the top of the dock, watching the two ships get ready, and then slowly sail away from the port, the people on the dock waved goodbye to the crew, and even some emotional women shed a few tears for this.

"Husband, it's just two ships leaving the port, why are there so many people sending them off?" Wen Xin looked at the crowded crowd below and asked Li Su with a puzzled expression.

"The people of the world are bustling; Come for profit, go for profit. Tai Shigong's words can be said to exhaust the essence of this world. Li Su had a warm smile on his face, which looked extremely bright in the sunlight.

Wen Xin nodded as if she didn't understand after listening to Li Su's words, although she was smart, she still knew too little about human accidents, so she couldn't fully understand the meaning of Li Su's words, and when she turned her head to look at the dock, she just saw another team of slave catchers docking, and the ragged slaves on the boat made Wen Xin frown again and again.

And Li Su looked at the slave fishing boat on the shore, and the smile on his face became even brighter, the workers there in the salt factory finally came!!