The dark night sky is dotted with stars, and the brilliant twinkling stars show a kind of eternity.

No matter how time changes, only the stars in the sky will never change.

The moment a star flashes out, thousands of years have passed.

When people face such a starry sky, only when they understand the truth of the starry sky can they know how small human beings are and how insignificant their lives are.

The wind at night blew on the body very cold, at the entrance of the village of Lishan, the couple stood under the starry sky, Li Yue looked up, "Husband, please speak." ”

Zhang Yang first took out his compass and pointed to a star in the north, "Do you see this star?" ”

Li Yue nodded, holding her arms against her husband's body, to avoid some of the wind, she looked up, "I see." ”

"This is the North Star, in the words of Yuan Daochang, it should be the Purple Microstar."

"I know Ziweixing, Ziweixing is eternal."

The daughter-in-law can understand this common sense, and then it is much simpler.

Since her pregnancy made her life inconvenient, she was reading books all day long, frantically supplementing all kinds of knowledge.

From astronomy to the art of war, and even to some geographies.

The aunt brought a cloak for Her Royal Highness to put on.

Li Yue looked at her husband's side face and listened quietly.

"In fact, for us, the stars in the sky are a coordinate, which can be used to mark our current position, and the location of the purple microstar is a good reference for us."

Zhang Yang held the compass, "After we confirm the position of the purple microstar, we will measure, and use our fingers to touch the horizon to calculate the approximate height of the purple microstar and the horizon." ”

Li Yue nodded and listened patiently.

"It's like a trigonometric function, we know that the horizon and the height of the North Star, measured by two degrees of a finger, the higher the North Star rises, the greater its angle."

Aunt Yang stood aside, looking at the husband and wife snuggled together, with a smile on her face, they were different from other couples, and they discussed state affairs in their spare time.

Now we can study the stars together, and what we do is so different, but our feelings can be as good as ever.

Her Royal Highness the princess is very happy now, and this is a bittersweet end.

"Does this need to be calculated using the trigonometric formula taught by my husband?"

Li Yue understood quickly, she used a branch to write the equation on the ground, and the result was seventy-five.

Zhang Yang nodded, "This is the latitude where we are, according to the angle we calculated, you can look at the compass." ”

She frowned and looked at the compass for a while, followed the scale to find the corresponding position, and read: "Mao Qi Qi Four, December Three ......"

Li Yue, who suddenly came to his senses, said happily: "It can really be calculated!" ”

"This is where Daoist Yuan and Daoist Li Chunfeng are educated, and it is also the mystery of the stars."

The puzzle that had plagued her for three years was finally solved, Li Yue happily hugged her husband, and happily hugged Aunt Yang, "Auntie, I have solved the longitude and latitude and the calendar, I have learned." ”

Aunt Yang looked at her dotingly, "As long as the princess wants to learn, she can learn anything." ”

Li Yue was overjoyed, this was a major breakthrough in her painstaking research.

"Speaking of which, this is also the compass of Daoist Yuan, which inspired me."

Li Yue suppressed her smile, she will also be the main mother of Lishan in the future, she was as happy as a child just now, and at this moment she put away her smile and looked serious.

When the eyes of the husband and wife met again, Li Yue laughed again.

"Yuan Daochang's painstaking efforts for so many years have been cracked by his husband, if his old man knows about it, I'm afraid he will go crazy."

Zhang Yang put away the compass and erased the calculation on the ground, "Actually, I calculated it based on Yuan Daochang's compass, and it can only be said that his foundation has made me where I am now." ”

The couple returned home, Xiao Wu and Xu Hui took a bath, ate and fell asleep.

After a day of playing in Lishan, they were tired and the bears were tired.

Li Yue was in a very good mood, she put cold boiling water into a jar, and then put it outside the window to wait for the water to condense into ice, "I'll make a smoothie tomorrow and put some dried fruits and jam for these two girls to eat." ”

After doing this, Li Yue sat down again, rechecked today's feelings, and drew the circle and the weft.

"In my husband's words, we are in seventy-five dimensions, how can I find the weft?"

Zhang Yang sat outside the door washing the dishes and chopsticks, "The radius should be divided by half, and the middle line is used as the equator to go up to zero." ”

According to this statement, Li Yue began to calculate, and found the line at thirty-four latitudes one by one.

At this moment, she frowned again, "If you don't know where the warp is, you just know that you know the weft, or you don't know where Lishan is." ”

Zhang Yang put the washed dishes and chopsticks back in the cabinet, "The meridian should be measured during the day, compared with the angle of the stars tonight, and the sundial should be used to record the change of time, and then the height of the sun can be inferred." ”

On the drawing, Zhang Yang drew an umbrella diagram, "Calculate the angles of each moment, and each angle extends to the horizon where we are, which is the meridian we are on, which is a little more complicated than the way we used tonight." ”

"I'm going to do my own math this time."

Being pregnant once made her motivation to study disappear, and at this time she returned to the state she was in a year ago.

On the other side of the village.

Yuan Tiangang was still sitting cross-legged in place, meditating.

After sitting for a long time, he suddenly laughed, and he stood up madly and recited the Tao Te Ching in his mouth.

Inside the house, Li Tai saw this situation and asked, "Daoist Li Chunfeng, is Daoist Yuan sick?" ”

Li Chunfeng was still holding the scroll in his hand, and turned his head to look outside the house, "It's that Dao's heart is broken." ”

"Seriously?"

"It's okay, it's just that the Dao heart is broken, and it will be fine in a few days." Li Chunfeng said indifferently.

Li Tai scratched his head in annoyance, "Yes...... Is it? ”

"If Zhang Yang's inference is correct, it can be seen from the original iron pestle hanging sand table that the earth under our feet is indeed rotating, plus Yuan Daochang personally sent people to various places to make such a sand table this year."

"According to what Zhang Yang said, for us, from the north to the south, there are rules to follow in the scale traces from Lingnan to Shuofang." Li Chunfeng crumpled the paper into a ball, "His Royal Highness King Wei, please look at this piece of paper, if it is a ball, we live on one of the points, and the traces of rotation of the sphere from top to bottom also change with the position, and the higher the point rotates with the ball, the faster it will be, so it can be seen that we are not only living on a ball, but also a ball that will rotate." ”

"And this is all Yuan Daochang personally sent people, personally selected the location, all the facts are in front of you, a lifetime of learning has been fruitful, when you understand the appearance of the world, found that it is contrary to what you have learned in your life, but the fact is that the verification process is Yuan Daochang's own doing, his own verification, can his Dao heart not be broken?"

Li Tai said wistfully: "It's all my brother-in-law's fault." ”

Li Chunfeng said again: "His Royal Highness King Wei doesn't have to worry. ”

"Okay." Li Tai retracted his gaze and saw the guard coming with a bowl of vegetable leaves, this is today's dinner.

Taking the bowl, Li Tai poured some more meat foam and stirred, took a bite and asked, "Does Li Chunfeng want to eat it?" ”

Li Chunfeng glanced at the bowl of vegetable leaves, "Can you eat this?" ”

Li Tai chewed in his mouth and said to the guards: "Kill two ducks to cook for the two Dao Chiefs, and then go to the Lishan Medical Center to invite two doctors to come over and see if Dao Chang Yuan is still saved like this." ”

Yuan Tiangang was laughing and talking to himself, reciting the Tao Te Ching.

The guards left in a hurry, and Li Tai finished eating the vegetable leaves in the bowl, "In winter, there are only this spinach and cabbage, which can be eaten after scalding with water, and the seedlings grown by my brother-in-law himself are cultivated in the village, and now they are planted in every household, and the Taoist chief should also taste them." ”

Li Chunfeng shook his head with a look of regret, "Yuan Daochang, this is a heart disease, and there is no cure for it." ”

Li Tai buckled the vegetable leaves between his teeth, "This king also has a heart disease, and he will vomit when he arrives in Chang'an." ”

"That's a strange thing."

"I'm going to vomit."

Li Tai said it seriously.

The next day, Li Tai got up early in the morning and saw Yuan Tiangang standing at the door watching the sunrise.

"Daochang Yuan, what my brother-in-law said may also be wrong, don't feel that what you have learned in your life has been wasted."

After a night of hesitation, Yuan Tiangang was full of energy at the moment, this was the state after enlightenment, his eyes seemed to be about to shoot sperm, "This is to inherit the treasures and knowledge of the previous sages, the old man should complete the achievements that the previous sages have not done, even if he uses his life to understand the truth of the world." ”

It seems that Yuan Tiangang has returned to normal again.

Li Tai also breathed a sigh of relief, if his father knew that Yuan Tiangang had come to Lishan, he would be crazy, and he didn't know how he would feel.

At this time, Yuan Tiangang faced the rising sun, no different from an ordinary person, and he was a little worried about whether he would go crazy in the future.

Li Chunfeng walked over and said suspiciously: "Actually, there is still a doubt in my heart. ”

Yuan Tiangang was in full spirit, his robe was hunting in the wind, and he was full of immortal wind and bones, "What's the confusion." ”

Li Chunfeng snorted: "If we really live on a ball, and the ball is still spinning, it stands to reason that we will feel, or the person standing on this ball will fall." ”

The smile on Yuan Tiangang's face froze.

"Are we living under the firmament, or are we above the firmament?"

Li Tai shivered in the cold morning breeze, and the little snow that had melted yesterday had left puddles on the ground, which had now condensed into ice.

He observed Yuan Tiangang's expression.

Finally, Yuan Tiangang smiled weirdly, Li Tai's scalp tightened, and he said in a panic: "Daoist Yuan, don't go crazy anymore, this king begs you." ”

Li Chunfeng was puzzled, "This is contrary to common sense. ”

Yuan Tiangang nodded clearly, "Well, that's a good question." ”

Finally, Li Chunfeng and Yuan Tiangang left together, Li Tai sat in front of the courtyard decadently, and the two enchanted Taoist priests had to hide in the future.

The guards smiled and held a meat bun in each hand, "His Royal Highness King Wei, eat it while it's hot." ”

Li Tai took the bun and took a bite, it was a familiar taste.

The guard handed over another bun as well, "His Royal Highness King Wei be careful of scalding, eat slowly." ”

Li Taihu wondered: "Where did you get the scallion meat buns?" ”

"It is said that Her Royal Highness the princess is in a good mood, and the whole village makes steamed buns to eat together, and has killed three pigs, and many villagers are robbing it.

Li Tai looked at his hands, the buns that had just come out of the oven were very hot, and he saw that his hands were hot and red.

"Have you all eaten?"

"His Royal Highness King Wei didn't eat it, how dare we eat it."

Li Tai stood up after eating, "How can two buns be enough for this king to eat, go!" Let's eat steamed buns together. ”

Following Li Tai all the way, the guard said again: "Didn't His Royal Highness King Wei say that he wanted to lose weight?" ”

Li Tai snorted coldly: "Brother-in-law said that weight loss should also be moderate, what if this king is quick and agile if he is hungry and stupid?" ”

"But ......"

"Who wants to say that this king can't eat buns, tear him alive!"

"I don't dare."

The women in the village were very busy, and Her Royal Highness the princess was glad to kill the pig today so that the whole village could eat steamed buns, and the rice and noodles were taken out of the storehouse one by one.

Li Yue filled the freshly steamed buns in the food box, and the two food boxes were filled with green onion buns in more than a dozen layers, "Auntie sent these buns to the palace for my father and mother, as well as for my younger brothers and sisters." ”

The aunt put the food box on the carriage and hurriedly drove away.

If there are good things, you can't forget the palace, and the business of Lishan still expects Your Majesty and the Queen to sell it, but what the Queen and Your Majesty have can always cause discussion in the elite circle of Chang'an City, and ordinary people don't need to think about it, the powerful are the main consumer force of the Tang Dynasty.

"Isn't it just a few buns, and my husband is still distressed?" Li Yueqiong wrinkled her nose and whispered.

"How many are these? There are hundreds of buns here. ”

"And so much more." Li Yue looked back and saw that there were steamers on the seven large stoves, and the women in the village were chopping meat and noodles, which was very lively.

Zhang Yang raised his head and said, "Is it a bun in my distress?" What I feel sorry for is the green onion. ”

Li Yue looked at this scene indifferently, and he didn't hear his husband's words.

"There are not many green onions planted in the village, and they don't grow well when it's cold, so whether you can eat green onions in the winter in the future will be able to plan for the future." Zhang Yang held his hands and was sentimental, "Let them let them go less, I feel distressed." ”

Turning around again, Zhang Yang tried not to look at the scene where the green onion was chopped into green onion segments.

The aroma of rice noodles and meat chives filled the village, and no village dared to celebrate like this, and it was not Chinese New Year's Eve.

Lishan is also wealthy, and as soon as he makes a move, it is a banquet for the whole village.

Niu Chuang came with someone carrying a sundial, "County Marquis, this is bought from a big family in Chang'an, and the price is negotiable." ”

After cleaning up his mood, Zhang Yang nodded and said, "Well, the sundial is difficult to do, so it's better to be affordable." ”

"Where?"

Zhang Yang swept around, "Just put it by the Weishui River, you take a platform to set up the sundial." ”

The sundial is a thing that confirms the time, and it depends on this thing to tell when it is, and the daughter-in-law needs to use this thing to compare the time with the longitude and latitude.

A group of bear children who were originally competing for steamed buns saw that Li Tai was coming, and they stopped one after another, and took the initiative to give the steamed buns to the recognized child king in the village.

In this village, there are two girls besides Li Tai who can't be provoked, that is, the disciples of Her Royal Highness the Princess, who are always followed by the bear, and the sharp claws are scary just to look at.

Every family has meat to eat at every meal, but the villagers still retain the rules of the previous poor days, and the men are the first laborers in the village, and if there is meat to eat, it must be given to the boys first, and then the more to the girls.

Now it's the boys who eat the buns first, and the girls have to wait.

As the leader of the girls, that is, Yu Yi, who helps Li Yue sort out the accounts, the village treats her as a maid by the princess's side.

The princess's account is forbidden and only she can enter.

Yu Yi distributed the buns to the girls in front of her, who were still sloppy, "Eat, Her Royal Highness the princess said, we can all eat it." ”

They sat neatly and said in unison towards Lishan: "Her Royal Highness Princess Xie, Marquis of Xie County." ”

After saying this, they devoured it.

The princess and the county marquis are not in front of them, and the respect they should have is indispensable, but if there is gratitude in their hearts, they will salute Lishan.

A girl with a mouth full of fat whispered, "Can you tell Her Royal Highness the princess that we don't want to study." ”

In the past, everyone was still young, but in the past three or four years, the girls have already reached the age of marriage, and some of them are slim.

Her Royal Highness the princess has a rule, whether it is a man or a woman, must be over the age of twenty to marry, otherwise they will marry out at the age of fifteen or sixteen.

Yu Yi stood aside and said in a low voice: "The county marquis and Her Royal Highness the princess have said that the whole village, regardless of boys and girls, must read and write, and besides, if you don't read and write, how will you compare with these boys in the future." ”

As she spoke, her gaze looked at the group of boys surrounding Li Tai.

"You speak differently from us now, and are all taught by Her Royal Highness the Princess?"

"Follow the teachings of the two aunts of Her Royal Highness the Princess, and stand and sit upright, and so should you."

Seeing Yu Yi standing straight, some girls couldn't help laughing, "You weren't dirty before." ”

"When you were a kid, you were as thin as firewood, and you still are." The girl who spoke puffed out her chest and showed her strength.

Yuan Tiangang and Li Chunfeng also returned to the palace, and Li Shimin was eating the scallion meat buns sent by Lishan, while listening to the two of them.

These words sound incredible.

"How can I believe that we live on a ball." Li Shimin chewed a bun in his mouth and said vaguely.

"Back to Your Majesty, Poor Dao sent people to various places to try, and the results obtained can confirm this matter."

Li Shimin took another sip of tea, "Even if what the two Taoist leaders said is true, this is contrary to the statements of the previous sages of the past dynasties, and it is bound to be questioned, and it is related to the reputation of the two Taoist leaders, so I think we should be cautious." ”

Yuan Tiangang bowed and saluted, "The poor Taoist will continue to participate in enlightenment, and if the book cannot be convincing to the world in this life, it can also be left to future generations." ”

Seeing that the emperor nodded, the two Taoist leaders bowed and retired.

Our world is a ball, we live on a ball? No matter how bizarre this kind of thing is, it is far from the current government.

Li Lizhi ran into the hall, "Father, my daughter wants to go to Lishan." ”

Speaking of Lishan, Li Shimin also thought that his father was still there, and sent people to persuade him to enter the palace for the New Year several times to no avail.

If I want to move him, I am the only one who has gone myself.

Li Li did not give up, "Father! The daughter misses the imperial grandfather. ”

"You miss your imperial sister and Xiao Wu, right?"

"My daughter just misses the emperor's grandfather." Li Lizhi was stubborn

(End of chapter)