Chapter 1 of the Sun and Moon of the Rising Tang Dynasty: Chapter 13: Crossing the river, Zhang Qian and others stayed in Yangcheng for 23 days. During this period, he and the technical officials of Sitianjian recalibrated the new day and looked at the sun, and successfully accurately predicted the lunar eclipse within a quarter of an hour. By the way, they also recalibrated the latitude of Yangcheng and officially determined the concept of circumference of 360 degrees.

Although the first few tasks took some time, the results were easily accepted by everyone because the observation targets were very direct. However, Zhang Qian spent a lot of effort on the last two "stop" products to convince the technicians of Si Tianjian to accept them.

The reason is very simple. People's mathematical concepts in this era come entirely from observation of nature. In the relative motion of the earth and the sun, the earth is regarded as a stationary point, and the sun rotates freely with the earth. The whole year is 365 and one-quarter of the day, and the position of the sun on the ecliptic changes every day is just marked as one degree.

Therefore, the ancients believed that the circumference of the sky was 365 degrees and one quarter, which was the perfect circle. The circumference proposed by the monks of India was 360 degrees, which was a fallacy.

Although Zhang Qian's position is higher than that of the seventh and eighth-rank technocrats, his qualifications and prestige are not enough to force others to accept his own theories. He cannot prove with actual observations that the earth's orbit of revolution is an ellipse, not a pure circle. Therefore, at the beginning, he was extremely imposing. However, when he introduced the trigonometric function into the calculation, all problems were solved.

In any era, scientific and technological workers are the most serious group of people. However, when they discover a new concept or technology that can bring great convenience, they are often the least stubborn group of people. After trying to use the trigonometric function theory taken out by Zhang Qian and recalculate some astronomical observations, the technical officials of Si Tianjian were quickly conquered by this theory. Therefore, the difference between Zhoutian and Circumference was automatically "understood" by the officials.

Such powerful flexibility made Zhang Qian, a time traveler, admired him so much that he gave a thumbs up.

According to the understanding of the officials of the Sitianjian, one-quarter of the 365 degrees of the circumference is natural, almost like Tao, without any errors. However, the concept of circle is artificially set. Things set by artificially set are destined to not reach the perfection of nature, so the circumference is calibrated to be 360.

Therefore, the circle is 360 degrees, and the sum of the inner corners of the triangle is exactly 180 degrees. In this way, calculating the sun shadow, the distance, and the difference in stars will all achieve twice the result with half the effort!

Therefore, the officials of the Sitianjian present unanimously decided to use the two nominals of 365 degrees and 360 degrees for the Sun Eclipse to show respect for the heavens. In the future, everyone will decisively move towards the 360 ​​degree calibration method in various other astronomical calculations and observations.

This workaround makes the revision of the calendar work a long time. Many deviations in the Linde Calendar can be directly corrected by changing the circumference. The correction results are not exactly the same as those in the Zijin Calendar, and the difference is so small that it can be tolerated. In this way, the theory of the "Book of Changes" used to explain the "Linde Calendar" can be directly applied to the Zijin Calendar. The deviations between the two calendars can only be regarded as differences in calculation parameters and observation accuracy, but the "guiding theory" can be considered completely consistent.

In this way, the service life of "Linde Calendar" can be greatly extended. The revision speed of "New Calendar" can also be greatly accelerated. After all, based on the research of previous generations, the workload is much smaller than starting a new job.

As the organizer of this astronomical calculation task, Zhang Qian did not personally participate in most of the actual work. However, his prestige among the technical officials of Sitianjian has increased day by day. Especially when everyone, based on his guidance, promoted the accuracy of the lunar eclipse prediction to within a quarter of an hour for the first time, many technical officials with white hair respected him as much as that of their teachers.

A boss who understands technology, does not interfere randomly, and respects subordinates' opinions is worthy of respect in any time and space. What's more, in addition to these three advantages, Zhang Shaojian also knows how to cherish the lives of his subordinates.

Realizing that he might encounter interception, he immediately made an excuse to let everyone cross the river one day later, and took his servants and measuring equipment to explore the way forward.

As for whether those thieves were pretending to be soldiers and who were instructed by them, he didn't mention everyone. It was obvious that he didn't want to drag everyone into the vortex and suffer the disaster of fish in the pond.

Even technocrats do not understand the worldly ways.

It was discovered that Zhang Qian intended to separate everyone from the vortex he was facing. The officials of Zhongsi Tianjian were grateful and worked harder in their work. As a result, the work that was originally expected to take a full month to complete was completed in just twenty-three days. And each step of the observation data and calculation process was sorted out very neatly.

For twenty-three days, Zhang Qian did not leave Yangcheng for half a step. His daily life was extremely regular, with the observation deck outside the city and the in-city stations, two points and one line. Officials from Yangcheng County and Sitianjian could testify for him.

However, during these twenty-three days, three White Horse Temples were slaughtered, two White Horse Temples were burned to white ground by fire, and one White Horse Temple monk killed the abbot and divided all the gold, silver and copper coins in the temple, and disappeared.

During this period, there was a small group of "snakes" who came from unknown places. It is said that because they peeked at the bronze utensils on the observatory, they tried to sneak attack the observatory. As a result, more than a hundred Shuofang troops who were ambushed around the observatory were killed.

The battle was far from being fierce, and no one in the Shuofang Army was killed. The total casualties of the Ren and Guo families did not exceed twenty. The total number of casualties of the "crackers" defeated by them was only seventy, and the rest all escaped under the cover of the night and the jungle.

However, the shock that the battle brought to the forces around it was hard to describe in words. The day after the battle, Yu Jin, the general of the Zezhou Prefecture, recalled all the officers led by the brigade and the military camp were ordered to be strictly ordered not to go out, otherwise the military law would be punished.

The governors of the government soldiers and soldiers in several nearby states soon took similar actions one after another, so as not to avoid any lower-level officers being tempted by money and running to the Yangcheng Star Observatory to seek death.

The "stupid young man" who refuses to listen to advice and insists on seeking death and dragging everyone down. The military governors of the palace also took the risk of offending a royal relative and took decisive measures. Anyway, it is easy to kill someone these days. As long as you deny it later, the royal relative will naturally settle the accounts on Zhang Qian.

The bandits and bandits within a range that Yangcheng could reach in one day decided to move, so as not to retaliate against the young supervisor Zhang on the observatory, who was indiscriminate and could suffer the disaster of the fish in the pond.

People in the martial arts world need shame. Even if they run away on their own, they have to find enough reasons for themselves. Fu Yuan, the boss of Niudu Village, is such a person. As soon as he left the parody, he began to mutter to his close friends, "We are not afraid of the surname Zhang, but there is no need to trek into this pool of muddy waters. If we fight with him, win and lose, and get the advantage, they are the bald donkeys in the White Horse Sect. We are not Baiwang Village, and we have never had any contact with bald donkeys. At this critical moment, there is no need to block disasters for others!"

"The boss is right. We are the one with Zhang, and Jingshui will not violate the river. He wants to seek revenge on others, so there is no need to block it!" A minion immediately came forward and agreed loudly, as if as long as he takes action, he can change the situation of the battle.

"Isn't it? We have no grudges and no grudges with Zhang, so there is no need to block the bald donkey in Baima Temple. Boss Bai of Baiwang Village is just unable to tell the truth, but he didn't count his life. Such a big strand was defeated all at once!" Someone was more realistic, and looked back at the mountain village that was gradually being thrown away, muttering tremblingly.

"It's really not unfair to say that Boss Bai died. He didn't even look at his pounds, but he actually went to provoke a magic devil! As a result, the other party chanted a spell and all the followers around him were invulnerable to swords and guns. Boss Bai not only paid his life, but also buried the entire Baiwang Village together!" Someone immediately agreed in a low voice based on the rumors, as if he was standing next to Boss Bai and witnessing the entire battle with his own eyes.

As soon as the conversation is opened, the topic will fall apart at any time. In a blink of an eye, the focus of the discussion among the bandits is no longer why they ran away, but the experiences of several surrounding peers in the rivers and lakes in the previous period.

"That's not the case. The man surnamed Bai only saw the money given to him by the monk, and did not inquire about it. How could the Young Master Zhang afford to offend him?"

"Oh, Boss Bai died because of lack of knowledge. Zhang Qian is not an ordinary person. His title of Secretary Shaoshu is actually more appropriate to call him the Secret Art Shaoshu. A few years ago, he took advantage of the solar eclipse and attracted meteors. With a "boom", the group of Buddhists who blocked the door and challenged him were wiped out into ashes!"

"It is said that Buddhism is boundless, but so many monks were destroyed by Demon Zhang alone. Who has the higher magic power? Is there any need to ask again?"

"Ah, I know how Zuo Jiasanlang died." Someone raised his hand and held his forehead and shouted loudly, "The lunar eclipse, there was a lunar eclipse the night before yesterday! During the eclipse, Zhang Shaojian was able to cast spells and summon fire meteors. Isn't the same with the lunar eclipse?"

The topic went off again, and in a blink of an eye, he ran to a lieutenant who was pretending to be a bandit.

"He died even more unjustly! He relied on being a lieutenant of the palace soldiers and school captains, and I don't know how many innocent people have been killed over the years. This time he has been full of evil."

"He died on the word "crazy". Since the end of last month and mid-this month, Baima Sect has begged many people to take action. Everyone knows that the Zhang surname cannot afford to offend him, but he is rushing to seek death!"

"Isn't that true, I'm not picking a place to seek death. I actually pretended to be our Green Forest hero and went to sneak attack the star-observatory. Is that star-observatory easy to sneak attack? Zhang Shaojian is the direct descendant of Li Chunfeng, and he will know the good or bad luck by star-observing classes. I guess he had already used star-observing techniques to calculate when the day the surname Zuo arrived, and then he started stepping on the gang and fighting in advance!"

"You also use the method of pi Gang and treading the fight? It's enough to know how to be astrological! Before he could beat him, he saw all the details of the surname Zuo. Next, how could he die if he wanted the surname Zuo? How could he die if the surname Zuo?!"

"Hey, stop talking about these things, hurry up and go, you're so scared!"

"I'm so scared. Anyway, I won't mess with these magicians. I won't go no matter how much I give it!"

"Oh, yes, get..."

Just as they were talking lively, a violent sound of horse hooves suddenly came from behind everyone. Immediately, everyone was so scared that they scalp, and immediately spread their legs and ran away.

Fu Yuanyouma, the head of Niutou Village, ran faster than his minions. He ran forty miles in one breath until foaming out of the mouth of the war horse under his crotch, and he had to hold the reins of the horse, scattered his body, and lay on the horse's neck to "repay".

"Oh, yes, yes..." Before he could breathe evenly, there was a sound of horse hooves coming from behind. Immediately, Fu Yuan was so scared that he rolled his eyelids and fell softly off the horse's back.

"Fu Dada, it's me, Xiao Liuzi, Xiao Liuzi of Wangjiazhuang!" Fortunately, the one who caught up with him was not the officers and soldiers, but the son of a friend who had been in love with him for many years. The latter was so angry that he was almost sank on the ground that he was scared and almost sank on the ground. He took two confidants Zhuang Ding and flew off the horse and supported him, quickly adding, "My grandfather said that the Zhang man left and left early this morning. It's okay, you don't have to hide. Go back quickly, he wants to discuss with you how to respond to Luo Daxia's heroic post!"

"Let's go, who did you say is gone? Zhang Shaojian? The Zhang Shaojian on the observatory?" In an instant, Fu Yuan, the head of Niutouzhai, returned to his body, trying hard to stand firm and ask quickly.

"Who else isn't that disaster star?" Wang Xiaoliu didn't think about it and immediately gave a positive answer. "Not only we were looking forward to him leaving, but the officials of Yangcheng County also looked forward to him getting out soon. So when he received the imperial edict to return to Chang'an, the news spread throughout the city."

"Is the imperial edict, do you mean that the emperor ordered him to recall him to Chang'an?" Fu Yuan was stunned for the first time in his life, and felt that Emperor Yingtian's Divine Dragon was so wise and magical.

"If it's not the emperor, who can control that evil star? Many people have seen the eunuch who was sent to the imperial eunuch. Good-natured, he really has no beard and his face is round like a duck egg. He just looks weird when walking, and he likes to lift orchid fingers at every turn!"

"Isn't it a fraud?"

"No, after my grandfather got the news, he immediately sent someone to follow him secretly. He didn't come back to report the news until his men left the county boundary."

……………………

"Li Xian is so anxious to call you back, what's the matter?" Riding on the Dayuan Liangjiao who was seized from one end, and another horse was following behind him. Luo Huaizu rushed to Zhang Qian while rushing to the bottom of the matter.

To be honest, he was one hundred and twenty unwilling to let Zhang Qian return to Chang'an so soon. It would be great to stay in Yangcheng, with the mountains high and the emperor far away. Even the rank of the governor of Zezhou was one level shorter than Zhang Qian. No one could care about this team that was coming out to revise the calendar, and the local government had to ensure the daily supply of this team.

When he, the leader of the sect, wanted to follow Zhang Qian as the second account room, he acted as the second account room. If he wanted to go out to be the sect, he went out to be the sect. He would never have to worry about his identity being exposed. Even if he encountered trouble, as long as he hid within the scope of the observatory, there would be no force that dared to continue to follow.

In addition, this period has been the day when his leader Luo has made the most accounts. Although Zhang Qian has repeatedly asked that once the attack on Baima Temple succeeds, he will spread the wealth in the temple as much as possible around him to attract more people from the martial arts world to attack other Baima Temples. However, he was not forbidden to fill his pockets.

Therefore, when Luo Huaizu saw a few handfuls of "floating wealth" that were particularly valuable and easy to carry, such as gold, gems, etc. As a result, after a while, his luggage could not be carried, and he could only free up a horse camel.

"I don't know what he is asking me for. The imperial edict said it very vaguely. I asked me to return to Chang'an immediately regardless of whether there is any progress in my practice." Zhang Qian glanced around with a telescope and answered very absent-mindedly. "Anyway, the mission has been completed, so let's go back. Keep staying on the observatory, and no one will come to die."

"It's not that you were cheating you back to Chang'an first, then arresting you and venting your anger for the bald donkeys in the White Horse Sect?" He had never been afraid of speculating with the most evil intentions of Li Xian, and Luo Huaizu frowned and reminded him.

"That's not. Since the emperor cannot pursue those people behind the White Horse Sect and the White Horse Sect, he naturally cannot pursue me." Zhang Qian still knew Li Xian's character a little bit, and smiled and shook his head slightly. "In addition, no matter how I take revenge on the White Horse Sect, it will not be harmful to the court and the emperor himself. It may even be very beneficial!"

"Then you still..." Luo Huaizu quickly looked around, confirmed that no one eavesdropped, and lowered his voice and suggested, "Then do you still call him the saint? How could he look like a saint? He has neither courage nor responsibility. He will hide and use his tricks to plot against others. Even if you have made great contributions to the country, as long as he feels threatened..."

"He may not be a wise emperor, but he is not bad to me." Zhang Qian interrupted without hesitation because Luo Huaizu had long been wary of fooling himself into following Zijuan's father's footsteps. "In addition, I don't like rebellion, and I'm not interested in revitalizing the Mo family's lintel. So, don't mention some things again!"

"You..." Luo Huaizu prepared a lot of words, but did not get the chance to make a statement. His face turned a little blue. He gritted his teeth and gasped for a while before he cheered up and continued to whisper: "I'm not advising you to rebel. You are greedy for wealth and enjoyment. That kind of risky thing is indeed inappropriate for you. But the people who want to murder you are Li Xian's biological daughter and the other is his own sister. As long as he refuses to come forward to preside over you, you will never be able to live in peace in your life."

"Then come on, anyway, I will take revenge." Zhang Qian smiled slightly, and his young face suddenly felt full of confidence. "To be honest, what I fear more than being an enemy is that I get too close to them."

This sentence suddenly exceeded Luo Huaizu's ability to understand. This person couldn't help but lower his head and thought hard. However, his head hurt, and the person didn't understand where Zhang Qian came from. He couldn't help but glared at his blood-filled eyes and asked in a low voice, "Do you know stargazing and fate? Or the secret technique of Guigu, can you predict that neither of these two people will have a good end?"

"I don't know!" Zhang Qian didn't even think about it and decisively denied, "The "Fairy Life" is a compulsory chapter of the Mohist school. Did the uncle forget it?"

"Free Destiny" is one of the famous works of Mo Zhe, the ancestor of the Mo family. As the real leader of Qi Mo, Luo Huaizu certainly could not forget it. However, when he saw Zhang Qian suddenly use the master's writings to deny understanding astrology and fortune-telling, he felt that he might have guessed the truth. So he frowned and whispered: "The purpose of the ancestor's fate is to teach the world to strive forward. If you don't believe that there is a distinction between noble and humble destiny in destiny, you should not deny astrology and fortune-telling. You, Qin Mo, have been away from the world for many years and have not been through war, leaving behind some inheritance from other families. It is also necessary..."

"I really don't know how to do it, and I don't believe this!" Zhang Qian was most afraid of being treated as a charlatan and interrupted without hesitation.

"Then how could you calculate that on the fifteenth day of this month, someone would pretend to be a bandit and sneak attack the observatory?" Luo Huaizu still didn't believe his words, grabbed a specific example and drew to the bottom of it.

This question is very easy to explain. Zhang Qian smiled and gave the answer slowly. "The Baima Sect is just a group of villains who lend money loans, not robbers. After the first time I failed to intercept me, it will definitely take time to summon people. And the purpose of my verification is to verify the sun, sun and lunar eclipse. Even if there is no imperial edict to summon the mission, I will definitely have to go back to Chang'an after the mission is completed. In the capital, no one has the courage to pretend to be a robber and intercept officials. Therefore, they must start before I leave Hedong. Compared with the two sides, the bandits either don't come, and it must not be too late to come. Moreover, I have many night blindness these days. If I want to lead the night attack, I can only choose the brightest days of the moonlight!"

"Well..." Luo Huaizu still didn't want to believe it, but he found that Zhang Qian's answer was almost impeccable. After pondering for a while, he quickly turned the topic to the next place where he was always confused. "You took that "Purple Gold Calendar" from the master. Since you know it is definitely accurate, why do you have to go to Yangcheng this time? Send others here, isn't the result the same? I always feel that you knew in advance that someone would intercept you, so you deliberately ran out to be bait. If you don't understand astrology, how could you guess so accurately? You have only been an official for a few days and definitely don't have this ability. And Zhang Shanchang and He Zhizhang, they are playing tricks, probably not as good as you."

"This..." Yang Qian's old but wise face flashed quickly in front of Zhang Qian's eyes. He shook his head and responded with a smile, "You should think I know astrology. Li Chunfeng's "Delin Calendar" has so many errors, and he claims to know everything for two thousand years. The "Purple Gold Calendar" I took out several times more accurate than "Linde Calendar", and I must know more than him."
Chapter completed!