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"That's the way it is, our earth looks like the stars in the sky from a distance. This is a fundamental feature of celestial bodies, and I'm not laughing. Yuan Ziyan glared in defense.

"Haha, Ziyan, you're so funny!" Li Shimin was angry and laughed, and felt that Yuan Ziyan was quite stubborn.

The two were noisy and noisy, each expressing their own opinions, the deep-rooted saying that the sky is round and the place is round has a long history, and it is difficult for people to accept it in ancient times when science and technology were backward, including Li Shimin.

Some people may say that Li Shimin is not as smart as modern people, but that may not be, because the starting point of the ancient and modern generations is different. If placed on the same starting line, Li Shimin is still an outstanding winner.

In any case, it was a meaningful thing, and Li Shimin immediately ordered to go down and give full support to Li Chunfeng in making this thing.

Li Chunfeng was overjoyed when he learned about it, this is the highest reward for astronomy enthusiasts, and he couldn't wait for it, so he carried out the design on the same day. Yuan Ziyan is indispensable to help the backing, and the discussion between the senior sister and brother all night is rabbit eyes in the morning, and it is red.

When the final design was presented in front of Li Shimin's eyes, his eyes almost didn't pop out. Obviously, Li Chunfeng, a follower, still obeyed his senior sister in the end, and designed the armillary zodiac into a spherical shape.

Li Chunfeng also had some trouble thinking about Yuan Ziyan's advanced theory, but his explanation was that such a design could determine the latitude and longitude of the ecliptic, equator, and horizon. This so-called spherical shape is actually composed of multiple rings, and there are precise degrees of weeks on the torus. The most basic structures are the quadrulometer and the red ring instrument, and a speculum in the middle is a modern telescope.

"It's just a tube, how can you see the heavens?" Li Shimin asked puzzled.

"Your Majesty, this is a lens designed by my senior sister, which achieves the effect of farsightedness by changing the concave and convex surface." Li Chunfeng carefully took out a square handkerchief from his arms, and the inner and outer three layers were wrapped with a piece of lens.

The lenses were made of the purest crystals at the time, and the effect was quite good.

Since the overall effect has not yet come out, Li Shimin has no interest in lenses and still feels that this big ball is a little strange. "Why don't you always design the surface of the ground to be square?"

"Your Majesty, don't be so complacent, okay? The ring also has the advantage of being a ring, and it can be staggered and rotated, which is easy to position. If the base is square. And how to adjust it? Yuan Ziyan muttered.

"Okay, that's it." However, Li Shimin is very knowledgeable, and in the end he still said two very important flaws: "Chunfeng, the multiple rings are flexible, but if you want to calibrate their centers accurately." It must be a difficult thing to do, and errors are inevitable. On the other hand, so many rings will also cover the celestial area, hindering observation. ”

"Hehe, it's worthy of being the son of heaven, and you can see the problem at a glance." Yuan Ziyan sighed and gave a thumbs up.

Li Shimin glanced at Yuan Ziyan angrily, when I am an idiot and don't understand anything, wouldn't that be if you let you lead the way: "Although this armillary sphere is much more complicated than that of Luoxiahong, it will continue to improve in the future and make it simpler." Suggested actions. Only when it is used efficiently can it really play an important astronomical role in the armillary sphere. ”

"Well said!" Yuan Ziyan couldn't help but applaud, which made Li Shimin and Li Chunfeng laugh, Li Shimin was praised twice, he was in a good mood, and added: "Of course, since it is a royal thing, it should also be considered beautiful." As far as I can see, four flying dragons have been erected around it. ”

Cut, Yuan Ziyan was disdainful for a while. Luxurious and exquisite, this is nothing, or Li Shimin is stubborn, which means that he still has to build a square base with four dragons on it. Holding a big ball.

"Shimin, don't you make a flat ground, don't you feel uncomfortable?" After Yuan Ziyan finished speaking, the three of them all laughed.

As he was talking, someone from Da'an Palace suddenly came to report that the Emperor Taishang vomited blood. I've fainted.

Li Shimin was shocked, hurriedly got up and rushed to Da'an Palace, and met the eldest grandson queen in a hurry on the way.

"Queen, I didn't mean to let you cultivate in the palace, it's windy today, why did you come out again, go back quickly!" Li Shimin complained.

"Your Majesty, the concubine has a sense of foreboding, the emperor is ......" Empress Changsun couldn't go on, but she didn't dare to slow down a step under her feet, and hurried to Da'an Palace.

Da'an Palace was in a mess, but everyone was waiting outside the house, including Xiao Wumei, who had been serving closely, and the house seemed very quiet.

"Who is serving the Emperor right now?" Empress Eldest Sun asked in a cold voice.

"Returning to the queen, the emperor won't let me wait to get closer." One person said tremblingly.

"Nonsense!" The eldest grandson queen phoenix's eyes widened, and she hurriedly stepped into the house, and Li Yuan, who was cold and thin, was lying on the bed, looking so lonely.

"Father!" Empress Eldest Sun let out a cry of sorrow and rushed over.

Li Yuan opened his eyes with great effort and smiled miserably: "Wuji, why are you still crying when you are so big." ”

"Father can't be capricious, you still need to listen to the words of the imperial doctor, don't delay the condition."

Li Yuan shook his head slightly, and said quietly: "These days, I am not alone, your mother comes to accompany me every day." and Jiancheng, Yuanji, and the ten grandchildren, hehe, are all here. ”

Li Shimin stood aside, originally very sad, but when he heard this, his face was extremely gloomy, and he said coldly: "Father, you are sick and confused!" Jiancheng Yuanji is dead, how can he accompany him? ”

Li Yuan slowly turned his head and asked, "Shimin, why are you so embarrassed every time you mention Jiancheng Yuanji, is it possible that you are afraid of them in your heart?" ”

"Afraid? Joke! Li Shimin said angrily: "Jiancheng Yuanji is innocent of death, I am only afraid that the people of the world will not have enough to eat and warm clothes, where can I take care of them!" ”

"Yes, yes, people, remember your words today." Li Yuan smiled.

"I have a word!" The more Li Shimin spoke, the more annoyed he became, and all the complaints in the first half of his life were said: "Father, Jiancheng Yuanji wanted to kill you at the beginning, and the Xuanwu lesion was a helpless move by the emperor, otherwise the people who died would be you and me!" The pain in the emperor's heart has nowhere to complain, but you always look at each other, mentioning the two from time to time, so that I have no face and my heart is tormented. Father, the son has now become the emperor, but in your heart, it is still no better than a dead ghost! ”

Li Shimin's voice was very loud, and Yuan Ziyan hurriedly stopped him: "Your Majesty, don't say it again!" The Emperor needs to be quiet! ”

"Go away!" Li Shimin suddenly pushed Yuan Ziyan away, came to Li Yuan's bed with red eyes, and said angrily and tearfully: "Father, the same son, why is the treatment different?" Jiancheng was loved and protected by you in every way during his lifetime, and after his death, he was also tortured by you from time to time! You can know how much anxiety the emperor has increased at night for the sake of his brothers and nephews, and the emperor is not yet forty, look at the white hair on the sideburns! ”

Li Yuan smiled and said nothing, Empress Eldest Sun stood in front of the bed with tears, and said in a trembling voice: "Your Majesty, how can you use this tone to talk to the Emperor Taishang, he is our father!" ”

"No, he's the father of Jiancheng! Father, I hate you, I hate you! Li Shimin roared with all his strength, as if the entire palace heard his angry heart, Li Yuan couldn't calm down after all, closed his eyes, and let the tears flow.

"Your Majesty, you only know how to cherish when you lose, you can't be to the emperor!" Yuan Ziyan came over again to pull Li Shimin.

"Which dynasty and which generation is not drenched in blood on the throne, the throne of the child emperor was forced out by his father!"

"Your Majesty, don't say any more!" Yuan Ziyan was anxious and said angrily: "One day, you will regret such words!" ”

"What is there to regret when I speak my heart?"

"Shimin, I hope you don't be complained about by your descendants like me." Li Yuan said slowly, his eyelids were heavy, and his breathing became heavy.

"Don't curse me anymore!" Li Shimin covered his ears like crazy, Li Yuan shed the last two lines of tears, his Adam's apple moved a few times, and he never woke up again.

It was quiet in Da'an Palace, no one dared to cry, Li Shimin looked at his father's body, "No, father, no, father, wake up, let's talk again." Father, Father! ”

Li Shimin sat on the ground and cried loudly, followed by crying one after another. Emperor Li Yuan, did not wait for his son to build the Daming Palace for him, with deep guilt and worry about his sons, passed away forever, at the age of fifty-nine, nicknamed Emperor Taiwu, temple name Gaozu, buried in the mausoleum.

Li Shimin couldn't say what he was suffering from, he was on the verge of collapse, he lost his appetite, and he always thought that his father didn't love him enough Li Shimin was unwilling to face too much, so he took care of everything that should be handled by Empress Changsun herself.

Because of the Emperor Taishang, the marriage between Li Chunfeng and Chu Ling'er was temporarily put on hold. Li Chunfeng did everything very well for this fiancée, such as handing over all the rewards to her, and his own money was also handed over in full, leaving no penny, but it was the same, he rarely met her, and he couldn't say a few words when he met occasionally.

People in that era were very conservative, and they didn't go on a date all day before they got married, but Chu Ling'er didn't think so. And the sisters around her are envious of her marrying a good husband, worry-free food and clothing, and she will be Mrs. Li who will enjoy Qingfu in the future.

Chu Ling'er stayed with Concubine Yang Shu for the time being, because of her special status, and there were people to take care of the rough chores, she spent all her leisure time sewing wedding supplies, exquisite mandarin ducks playing in the water, Li Chunfeng changed clothes in four seasons, and even shoes, hats, clothes and pants for future children. The dim candlelight at night could not hide Chu Linger's joy, she was busy day and night but not tired, and she only looked forward to marrying Ruyilang as soon as possible.

The funeral of Emperor Li Yuan lasted for nearly three months, and all kinds of cumbersome etiquette, the old illness of Empress Changsun was triggered in the end. Only then did Li Shimin realize that he was only sulking, and he neglected that his wife was still recuperating and recovering.

Empress Changsun felt that she could bear it, and she was not too tired, so there were many people to match, but the disaster was not alone, and in the same year, Empress Changsun's biological mother died of a sudden illness.

lost two close relatives in one year, and the health of the eldest grandson queen collapsed! (To be continued.) )