Those who do things under the emperor's command must have ten points out of ten points, and keep one point around, and the emperor will not be angry. However, if you give five points of strength and leave five points of strength, and only do superficial work, then it is good, and you will succeed in reaping the emperor's resentment.

Those who are resented by the emperor, except for a few people such as Wei Zheng, must have worrying consequences. After all, as long as people like to give charcoal in the snow, they don't like people who are icing on the cake. To stand in line, you have to stand thoroughly, no one likes people who are two-faced and three-faced.

Li Chengqian's words made Yuan Tiangang wake up, get up and tidy up his clothes, and deliberately wash his face and hands before he bowed his hand and said: "Your Highness's words made Poor Dao suddenly open, after this incident, Poor Dao will definitely give the East Palace a heavy thanks." ”

Li Chengqian smiled and nodded, although it was just a whim to point out Yuan Tiangang, but the content of the guidance was indeed worth Yuan Tiangang's expense.

Seeing that the gift was accepted, Yuan Tiangang also put his mind at ease.

Returning to his seat and picking up the drawings, Yuan Tiangang sighed and said: "There is no shortage of masters in my Daomen, and the one given to the poor Dao is one, and he once said that if this drawing can be calculated, the time can probably be accurate to the time of a pillar of incense." Poor Dao's arithmetic is not bad, but he is still unable to calculate such a number, and I don't know how many times it has been reworked. In terms of the month, it was estimated to be the end of April or the beginning of May, but it was not accurate to which day, which made His Highness smile. ”、

Hearing this, Li Chengqian nodded. However, what he laughed at was Yuan Tiangang's calculations, not this master. In terms of astronomy, the earliest astronomical work in the world is the "Ganshi Xingjing" written by the famous astronomer Gander and his descendant Shi Shen in the pre-Qin period, Gander is the compiler of the world's oldest star catalog and the earliest discoverer of Ganymede.

Later, Zhang Heng, for example, was a pioneer of astronomy. It is precisely because of them that the Huaxia clan has occupied enough face in the astronomical world.

Now the Si Tianjian of the imperial court is actually responsible for drawing star charts, divining celestial phenomena and the like. However, it is clear that these people eat dry rice a lot. When the Wuhu was chaotic, I don't know how many classics the Han family lost and how much inheritance was missing.

Thinking of this, Li Chengqian suddenly felt a little embarrassed. In other words, the five nonsense are really chasing the crime, and the old Li family also has a pot.

Looking at the drawings, Li Chengqian took out a blank piece of paper from the table and said to Yuan Tiangang: "You read out the numbers and calculation methods on this, and you don't need to explain to me why, just read the numbers." ”

Seeing the prince's calculating look, Yuan Tiangang opened his mouth wide, but still handed over the plan.

Pushing away the pile of bamboo chips, Li Chengqian said helplessly: "You don't need these things, you can do it with paper and pen, and you have to calculate twice each time, and you are sure that it is correct, so you hurry up." ”

"Okay."

Yuan Tiangang agreed, he could only start to read the numbers on the drawing, he was very curious, he still knew that the academy had a new calculation method called abacus, but now His Royal Highness the Crown Prince does not need to calculate or use abacus, what can he do with paper and pen?

Not only Yuan Tiangang was confused, but even Zhang Yun, who was watching, was dumbfounded.

He was also familiar with numbers, and after following the prince for so long, he still recognized this new type of number. However, what is the prince doing by listing the two rows of numbers together?

In this way, Yuan Tiangang thought about it, and Li Chengqian calculated that when the sun set, Li Chengqian happened to recheck all the formulas.

Stretching his waist and taking the hot tea handed by Yuan Tiangang, Li Chengqian said lazily: "If the drawings given by this master of your Daomen are not bad, the time of the solar eclipse should be the first day of the fifth month, six minutes in the morning, you see, we don't need to be accurate to a pillar of incense, directly accurate to the carving." ”

Copying the answer on paper, Yuan Tiangang was still a little dumbfounded. He calculated for an unknown number of days before he reached the level of the month, and he didn't even determine it, but the prince only counted all the results in one afternoon. Could it be that His Royal Highness the Crown Prince also has great attainments in astrology?

This thought just rose, and it was cut off by Yuan Tiangang himself. This is impossible, the crown prince is only fourteen years old this year, how can he be successful in astrology? It's estimated that the introduction is early!

Seeing that Yuan Tiangang was still with his mouth open, Li Chengqian knew that he had scared him again.

After simplifying the complex calculations, even a junior high school student in the future generation can calculate the results step by step. In his seemingly bland behavior, in Yuan Tiangang's eyes, it changed its taste.

Not wanting to dwell on this issue, Li Chengqian had no choice but to change the topic and say, "Old Yuan, how about discussing with you and introducing this master of your Daomen to Gu?" Lone is going to set up an astronomy academy in the academy, and there is a shortage of leaders, just forget about the rotten garlic of Si Tianjian, this master of your Dao Sect is very suitable! ”

Yuan Tiangang closed his mouth and immediately became alert: "Your Highness, you are the crown prince, it stands to reason that it is his great blessing to be recruited by you, but Poor Dao has an appointment with him in advance, and his location cannot be exposed, so it is okay to pass on the word for you, but don't think about using your identity to make him obey." ”

Li Chengqian waved his hand indifferently and said: "It doesn't matter, Lone doesn't bother to use his identity as a prince to force him out of the mountain, you just need to send him today's results, and by the way, tell him that Lone is sure to let him see what the moon really looks like." Lone believes that this guy will definitely take the initiative to send it to the door! ”

Seeing that the prince did not want to be persecuted, Yuan Tiangang breathed a sigh of relief and agreed.

It was already getting late, and it was estimated that the palace doors were about to be locked. Although Li Chengqian felt that the emperor knew his whereabouts, he still had to go back to the palace when he should go back to the palace.

got up to leave, Yuan Tiangang wanted to send it all the way, and sent it all the way to the outside of Laojunguan.

Li Chengqian, who returned to the East Palace, closed the palace and guarded himself, and no longer mixed with things outside the East Palace.

At present, there are many people in this world who don't have to worry about it, and the emperor's father happens to be the first. As an emperor, or an emperor of martial arts, or a black-bellied man, he has always been friends with conspiracies and tricks, maybe the shortage of information will catch him off guard, but after knowing the information, he is invincible.

Yuan Tiangang would definitely report the matter of the solar eclipse to the emperor secretly. And the emperor, as long as he knows that there will be a solar eclipse on the first day of the fifth month, is enough, and as shrewd as he is, he will definitely prepare in advance to make himself invincible.

The document asking about the guilt Tugu Hun and summoning Murong Fuyun to the court to ask for guilt was issued. And as a result, as many people guessed, Murong Fuyun replied that he was sick and was afraid that he would die on the road after a long journey, so he asked Emperor Tang to allow him to recover from his illness and visit again. As for the Shanzhou incident, the old bastard didn't say a word, and he didn't say anything about his illness, and asked the envoy to bring shabby gifts, asking Emperor Tang to marry the princess to his son Murong Zun.

After the fall of the Eastern Turks, especially after the advent of gunpowder weapons, at least on the surface, Datang has become a well-deserved overlord. Being able to marry the princess of the Tang Dynasty is an honor for all the surrounding countries. Xue Yantuo, Turkic, and Tubo all mentioned the idea of marrying a princess. And a small country like Goryeo knew that it was not qualified enough, and with Ashina Xue in front of it, they asked the Tang royal family to accept their princess.

Although it is rumored on the market that the maidservants of Goryeo are the most gentle and considerate, and their appearance is not much different from that of the Central Plains, they are the best choice for purchasing, but Li Chengqian is still a little insensitive to gratitude. Not only Goryeo, but all small countries were rejected by him.

The prince didn't want it, and other princes didn't dare to ask for it. If you marry a princess of an enemy country, the innocent will also become turbid. Originally, they were all acting with their tails between them, for fear of being caught, and what is the difference between marrying a foreign princess and directly wearing the hat of "collaborator"?

If there was no Tuyuhun incident, Li Shimin would still hope to marry these countries, because at least on the surface, the border would be able to remain peaceful for the time being. But after this incident, especially after being ridiculed by the prince's metaphor, he felt that the marriage was also a meat bun beating a dog, and it was purely a matter of going and no return. did not hesitate to refuse these requests for marriage, and the excuse used was the "clan girl" created by Li Chengqian. And the princess of the princess...", the law.

Although Tuyuhun's gift was very shabby, the emperor agreed, but the condition given was that King Murong Zun would personally enter the court to welcome him.

Probably afraid that his son would never return, Murong Fuyun rejected the emperor's proposal and asked the prince of Tang to marry his daughter instead.

Of course, this request was also denied.

The envoys of Datang and Tuyuhun came and went, and the time came to the end of April unconsciously.

When Tuyuhun's envoy left with the news that "the prince refused to make peace", Li Chengqian breathed a sigh of relief.

During this period of time, if all the requests for marriage were granted, I am afraid that he would already have more than a hundred goodies of different races.

"Your Highness, why do you refuse them all, it's good to promise one or two. When the concubine entered the palace to greet the queen mother, she was always preached by the queen mother, you were unwilling to accept Liangdi, but it was as if the concubine was a jealous woman. ”

Even Su Yuan only dared to approach when Li Chengqian's desktop was not broken.

If an official sees a scene in the study at this time, he will definitely be furious. Because the crown princess actually sat on the prince's desk, a head taller than the prince.

Su Yuan's behavior was naturally connived at by Li Chengqian, and Li Chengqian would always encourage Su Yuan to do so in these behaviors.

Raise your eyebrows? Respectful to each other? Although it is a word to describe the harmony of husband and wife, in Li Chengqian's view, it is a derogatory term. Du Teniang's has become a subordinate relationship and a neighborhood relationship, can she be regarded as husband and wife?

Sitting up from the chair and sitting on the desk, Li Chengqian reached out and grabbed Su Yuan's shoulder, and said with a smile: "The queen mother actually wants Donggong to be a little better, and when I am old enough, I can give her a grandson as soon as possible." No, I can't do it, I can only put pressure on you. Rest assured, the Queen Mother is not blaming you. If I talk about you next time, just listen to it, don't take it seriously. ”

Su Yuan grinned and reached out to wrap his hand around Li Chengqian's arm. This kind of behavior, the two of them are like buddies more than like the prince and the princess.

The desk is very large, plus there is no such thing as a fold, and the paperweight is also in the corner on the other side, looking at the wide desk, Li Chengqian's mind involuntarily appeared some plots of island country action movies. Quickly cut off such thoughts, it was obvious that he could accept such an act, and Su Yuan couldn't stand it. Don't look at her now, she is quite open-minded, but she is actually very traditional and conservative in spirit.

Reaching out to touch the side of Su Yuan's face, Su Yuan, who had been through many times, knew what was going to happen next, and she should have gotten used to it, but she still blushed.

Just when Li Chengqian wanted to do something happy, the door was knocked open.

Su Yuan screamed and hid under the table.

"Zhang Yun, didn't Lao Tzu tell you to knock on the door before coming in!"

turned his head angrily, but saw Zhang Yun standing outside with a worried face, and the one who broke into the door was a person who was fully armed, like an iron tower, and even put down his face armor.

It can't be an assassin, Li Chengqian knows very well that the defense of the East Palace is not just a simple place at the palace gate. You must know that except for hundreds of people who were sent to various places to supervise the training of gunpowder weapons, the rest were all in the palace, and the so-called rotation was actually a rotation outside the palace and inside the palace.

In the East Palace, even where the palace maids change their clothes, there may be a hidden member of the family on the roof. Under such a defense, if someone can break into the study of the East Palace, then this person is either Iron Man or Steve.

The person who came took off his helmet and visor, and it was Wei Chigong!

The appearance of Wei Chi Gong's whole body armor startled Li Chengqian, and he quickly jumped off the table and asked, "General Wei Chi, what made you go straight to the study of the East Palace?" ”

Wei Chigong knelt down on one knee and said: "Your Royal Highness, Your Majesty suddenly became seriously ill, the queen mother made a decree to summon Weichen and others into the palace, and now the left and right Wuwei have controlled the city defense of Chang'an. ”

Hearing Wei Chigong say this, Li Chengqian was immediately dumbfounded.

Take control of Chang'an's city defense? Jeon Hoon was summoned to the palace? Jin Wuwei Qi Zhao? The prince enters the palace?

Special mother, this is the rhythm of the emperor to control Bintian!

No, the emperor only came to the East Palace two days ago to mix a steak, and after eating three or four catties before he got out, why did he suddenly get seriously ill?

Wei Chigong's words, Li Chengqian had to believe it. In fact, don't look at Wei Chigong's inconspicuousness, he is the emperor's closest person. At the beginning, he was the one who fought into the harem and forced Li Yuan to take the throne. If the emperor made any arrangements for such a thing, Wei Chigong was undoubtedly one of the best ministers.

"Zhang Yun! Pass the order of the orphan, personally lead the whole armament, and enter the palace with the orphan! ”

Zhang Yun agreed and "flew" out.

The so-called fully armed people are not a joke, because the East Palace has always had a batch of gunpowder weapons in stock, although the number is not much, but it is an absolute deterrent.

The assembly speed of the pro-lead was very fast, and when Li Chengqian arrived at the gate of the East Palace under the escort of Wei Chigong and Jin Wuwei, they had already completed their costume change.

Under the escort of Qin Sui and Jin Wuwei, Li Chengqian did not go through the training gate, but entered the imperial city from the Chengtian Gate.

In the Taiji Hall and in front of the Taiji Palace, there are all nobles in Chang'an, as long as they have a title and a little strength in the family, they are all here.

Cheng Yanjin surrounded the Taiji Hall with a heavily armed army, and the air was filled with a smell of slaughter. At this time, if anyone dares to scream, it is estimated that they can scare one or two cowards to death.

Passing through the Taiji Hall was also in a hurry, and Li Chengqian knew very well that when the throne was alternating between the old and the new, such a battle was normal.

There is also martial law in the harem, five steps and one soldier, and ten steps and one general are not enough to describe the strictness of the defense. The palace maids and eunuchs all stood outside and shivered.

Not in the mood to pay attention to the inhumanity of the guards, Li Chengqian trotted all the way to the front of the Ganlu Hall with Yu Chigong.

The defense here is even more perverted, the mysterious Xuanjia Army appeared today, surrounded the main hall, and everyone was equipped with gunpowder weapons, the fuses of grenades have been pulled out, and bows and arrows have been put on the strings.

"Your Highness, Weichen is still going to inspect the city defense of Chang'an, so I will escort you here, Zhao Gong is already inside, you can go in directly."

Li Chengqian nodded, turned around and instructed the Sky Monkey: "Disperse the formation, line up to the periphery of the Xuanjia Army, and if there is anyone who enters without an order, there will be no mercy!" ”

The Sky Monkey also knew the seriousness at this time, and immediately dispersed with his proximity. Unlike the Xuanjia Army, who were stupid and only knew about the siege of the Ganlu Palace, the Sky Monkey gave the order, and many people left the team and went directly to the room. As pioneers in the use of gunpowder weapons, they were naturally aware of the importance of vision for gunpowder weapons.

After sending out the personal rate, Li Chengqian breathed a sigh of relief and pushed open the door of the Ganlu Hall with a nervous mood.

The strong smell of soup and medicine, even outside the hall, can be clearly smelled.

When I entered the Manna Palace, I saw the head of the imperial doctor with a bitter face and boiling medicine. Looking inside, Li Chengqian suddenly found that his expression was so lacking, and he didn't know what expression to make.

On the huge desk, the eldest grandson Wuji and the emperor who was seriously ill stood opposite each other, each of them was menacing, eager to kill the other.

The eldest grandson looked at her husband and brother worriedly, looking like she wanted to say something.

"I'm betting on yours!"

"I'm betting on Your Majesty's small!"

"Open!"

"Hahahaha, Your Majesty, drink!"

After a glass of strong wine, Li Shimin saw the messy Li Chengqian: "Come on, come and play with me, anyway, you won't be able to go back to the East Palace these days, just play with me for a few days." ”

After seeing this scene, if Li Chengqian still didn't know what was going on, he should have looked for Sun Simiao.

Coming to the desk, Li Chengqian said helplessly: "If you want to act, you have to act like a little bit, Sun Daochang is in the medical school, why don't you summon him into the palace?" ”

Waving his hand, Li Shimin said indifferently: "I've already called, and it's estimated that I'll be there in a while." There are still five days left before the first day of the new year, and for these five days, I have to stay in the temple and think of some ideas for me to have fun. ”

Li Chengqian sighed helplessly.

A solar eclipse is a sign of the death of a king and a country.

The emperor, who learned the news, decisively chose the former. This is the smartest, most straightforward, simplest, but also the most scoundrel of the way to do it.