Day and night, can you really travel day and night?

That's not a rush, it's a death.

No one can rush around the clock, maybe the heralds in the army can do it, but that is carried out under the premise of overdrawing lives, and even with three people, it is difficult to ensure that they can travel day and night.

But believe it or not, the cargo capacity of this kind of train is there, and it is worth developing vigorously because it can compete with the capacity of half a ship with just one train.

Although the capacity of Cao Yun is very large, it is subject to the influence of the river, and many places cannot transport it at all, but the railway is different, this can be repaired almost anywhere, which is very convenient, but the investment is a bit large.

As a soldier and about to enter the cabinet, no one knows better than Li Tao what this means?

It only takes four horses, five wagons, and three men to transport two hundred stone of goods to the border, in other words, to support the troops of a legion to defend the border, as long as there is a railway, only ten wagons need to be constantly transported back and forth to ensure that their supplies are not affected in any way.

Under the huge impact of the train, Li Tao has obviously forgotten Li Yuanji's previous ambition about tax exemption.

Endurance tests are boring, boring, and take time.

Whether it is Li Yuanji or Li Tao, there is no time to wait here to watch them boring to test.

The so-called test, in the case of insufficient railways, is nothing more than running from one end to the other, and then going around a circle in a pre-set place and back, running back and forth, counting the time, counting the times, and calculating the endurance mileage in order to calculate the endurance mileage.

Back in Chang'an, Li Yuanji, who wanted to go to Taipingfang for a walk, just walked to the door and retreated.

"This Luo Chen is so unbelievable, I can't go even if I want to!" Standing at the gate of Taipingfang, looking at the crowded scene inside, Li Yuanji couldn't help complaining in annoyance, and immediately waved his hand: "Go back to the palace!" ”

A lot of people means good business and making money, which should be a happy thing, but Li Yuanji is unhappy because he can't get in.

You can't let yourself be an emperor and crowd with people like a temple fair, right?

Song Zhong followed behind him, and could only shake his head with a wry smile, although he also knew that Li Yuanji was complaining boringly, he would never blame Luo Chen for this, but it was too late to be happy.

"Congratulations to my father, congratulations to my father!" The eldest son Li Chengguang was playing happily in the Taiji Palace, with a large number of palace maids and eunuchs and guards, it is not an exaggeration to say that it is ten thousand people to protect him, seeing Li Yuanji's figure, Li Chengguang ran over with a spirit, and congratulated Li Yuanji.

A four-year-old boy is a little kid who doesn't know anything in later generations, but boys in ancient times generally matured earlier, but a four-year-old child is so sensible, but it is the first time Li Yuanji has met it.

"Oh? Tell me, what do you want to congratulate? Li Yuanji became interested for a while, and couldn't help but have the idea of teasing.

"My father is like a god, and the people sent by the general Su Dingfang have long been waiting in the palace, saying that the countries of the Western Regions that fought in the Tang Dynasty are bowing down and are vassals, and they want to come to Chang'an to ask my father for peace." Li Chengguang looked like a little adult, and said with a clear eye.

"Oh? How about I make you a king and send you to the Western Regions to rule them? Li Yuanji continued to tease.

Li Chengguang's face was stunned for a moment, and then he had an aggrieved expression of wanting to cry, and even his voice was a little choked: "No, the son will stay in Chang'an, and if he doesn't go anywhere, he will stay with his father......"

"When you grow up, you still have to be crowned king."

"Don't, Erchen is the eldest son, even if he grows up, he should be the prince, the prince should stay in Chang'an, stay by his father's side, and it is the younger brothers who should go out." Li Chengguang said without hesitation.

Listening to Li Chengguang's words, Li Yuanji's face instantly darkened, but it was only for a moment, the expression on his face returned to the same as before, stroked Li Chengguang's head, and said with a smile: "I will go over there first, you can play here first." ”

"No!" Li Chengguang sent it off respectfully.

Compared with Li Chengguang's childish words, Li Yuanji saw some different flavors.

A four-year-old child, even if he is mature, how mature can he be?

A child who can regard the general of the marching road as a general, and can't even distinguish the most basic official positions, can so clearly explain the complicated problem that the eldest son is the crown prince, and the other sons will be driven out of Chang'an by the king.

If there is no one behind this to teach him, Li Yuanji will never believe it.

There are many reasons why he did not appoint a prince, one is that he is still young, less than thirty, and the second is that the princes are too young, and the eldest Li Chengguang is only four years old.

coupled with his own character, the ministers did not rush to urge themselves to be crowned princes.

But it is undeniable that the ministers are indeed secretly observing, but now there is only one person who can be investigated, Li Chengju is a concubine, and he has natural defects in his body, if Li Chengguang can't be the prince, then there is only one reason, the queen Yang gave birth to another prince, and this prince became the prince, no matter how it is arranged, Li Chengju can't be ranked.

It's the same as the relationship between the three brothers, because they were all born to the queen Dou, so even if they were left alone in the end, the other adult princes were still not qualified to compete for the crown prince.

Back in the study, the messenger who came to deliver the letter had already waited for a long time, handed over the hot, unopened secret letter, and then retreated under the guidance of the officials of the Ministry of Rites, if there was something wrong, there would be an official of the Ministry of Rites to inform, if there was no notice within seven days, the Ministry of Rites would come to inquire, and then let him return to the army.

Holding the letter from the west, although he knew that it was good news, Li Yuanji's mind at this moment was not on this.

"Secretly check to see who taught him so many crooked ways in front of Chengguang." Always reassured, Li Yuanji finally asked Song Zhong to secretly investigate the matter.

"No!"

Li Yuanji did not want his son to have problems between their brothers for the position of crown prince in the future, although the bad start had already begun, Li Yuanji still hoped that in the future they could coexist peacefully, and no matter who became emperor, they could treat other brothers well.

Although it is the most ruthless emperor's family, and none of the princes of the Tang Dynasty in history have a good end, he still wants to change this.

Li Yuanji always felt that he was doing the right thing, he didn't fight for the crown prince, nor did he compete for the throne, and now all this is just because Li Shimin is too pressing.

The issue of children's education has become Li Yuanji's biggest headache at the moment.

He had the intention of throwing all the princes into the academy to study, but some ministers felt that the education that the prince should receive was different, and they did not need to go to the academy to study like ordinary people in the future.

What they have to do is to find a famous teacher, teach some things that the royal family should learn, and by the way, learn about the learning content of the academy, know, understand its purpose and meaning, and do not need to grasp it.

What the ministers said made a lot of sense, but Li Yuanji also had his own ideas.

I didn't care much about it because my two sons were still young, but after today's incident, it reminded Li Yuanji that he had to pay attention to this problem.

A four-year-old prince has someone instigating the matter of the prince in front of him, so after the Yang family gives birth to a son, will there be other problems?

Once this kind of thinking is rooted in a person's mind, it is not so easy to erase it later.

"Don't let me find out, or whoever it is, I won't let you go!" Li Yuanji secretly said ruthlessly, instigating the prince, this matter must not be endured.

After making up his mind, he calmed down and opened the secret letter sent by Su Dingfang.

In fact, before this, Su Dingfang had already come to a good news, the siege of Yanqi was lifted, and the Gaochang Kingdom was destroyed.

Yanqi wanted to invite the Tang Dynasty to garrison Yanqi, and the countries of the Western Regions suffered heavy losses, etc.

After opening the secret letter and reading all the contents on it, Li Yuanji couldn't help laughing.

There isn't much content on MeSign, but what it shows is extremely important.

The second year of Shenyuan corresponds to the fourth year of Zhenguan.

I don't know if it's really a coincidence, in history, the Tang army defeated Dong. After the Turks, Li Shimin was elected as the Heavenly Khan by the Western Regions, what does the Heavenly Khan represent? It means that all the kingdoms have recognized you as a superior, although it is only superficial, you are still not hairy in others.

However, regarding the succession of the khan or the king, it must be canonized by the Tang Dynasty to be considered legal, which is not much different from the subject state, but it is different.

It's a code name of honor, but it's a great way to show off the country's prestige.

Destroy the east by yourself. Turkic, they didn't have any reaction, maybe the emperor at that time was still Li Shimin.

But after destroying Yiwu and Gaochang one after another, they finally reacted, and even made the same move again at the same time in history.

The purpose of the Western Regions countries coming to Chang'an was to elect themselves as Heavenly Khan, which also included the Western Turks.

"Haha, these people are really speechless......" Rao is not very interested in this, and Li Yuanji still couldn't hide the excitement in his heart.

"Your Majesty...... Your Majesty...... Let the minister in......"

Cheng Zhijie's hearty shout came from outside the door, a little hurried, although the guard at the door did not stop him, but he didn't dare to push the door open without permission, he could only shout loudly there, as for the frightened car or something, that fool was desperate, so there was a reason to go on.

"I said, ......" Before Li Yuanji could respond, Cheng Zhijie's surprised voice came.

"Okay, you old horseman, aren't you going to the toilet? If it weren't for the old man's mind, he would have been deceived by you......" Fang Xuanling couldn't help but scold.