Datang: What's wrong with my fief being a billion points larger?

Li Er looked at Li Chengqian and Li Tai. He really hoped that they could understand that the past was over.

Now that Li Yuanji accepts that they are still royal family members, they need to take on this responsibility for the Tang Dynasty.

At the same time, Li Er felt a little sad. Looking at the present, when he thought about how he had brazenly launched the Xuanwu Gate Incident, Li Er felt a little regretful.

What he regretted was not launching the Xuanwu Gate Incident, but killing Li Jiancheng's entire family. If Li Jiancheng were still alive today, it would have been a great event for them.

In particular, not only did he kill Li Jiancheng, but he also eliminated all of Li Jiancheng's descendants. The more Li Er thought about this, the more guilty he felt.

Li Er looked at Li Chengqian and Li Tai with complicated expressions and continued to speak.

"I have already told your Third Uncle that if I am no longer around one day, any of you or your descendants who dare to harm the Tang Dynasty will be expelled from my family tree.

You must also remember that at any time, the Tang Dynasty is still the strongest. You have a glimmer of hope that you will teach your children well in the future. We, the people of this lineage, must continue to pay for the sins that our fathers have committed.

The reason they exist is because of your Third Uncle, don't forget that!"

There are too many things that Li Er did not say. Even if he did, Li Chengqian and Li Tai might not understand them now. They will naturally understand them in the future.

Now he just wanted the two of them to remember what he said completely, as these were also the most real thoughts in Li Er’s mind.

After hearing this, Li Chengqian and Li Tai looked at Li Er with a firm expression after a moment.

"Father, I know that the lives of my family were given by my third uncle. We are still the royal family of the Tang Dynasty, and we must fulfill our responsibilities as members of the royal family of the Tang Dynasty.

I hereby promise my father that I will never harm the Tang Dynasty, and I will be proud of the Tang Dynasty and protect it well! "

The two men made assurances to Li Er one after another, and Li Er heaved a sigh of relief when he heard them.

As for whether what the two said was true, he believed it was true. If they really lied to him, he would not be able to control what happened in the future. Anyway, his two sons in front of him would definitely be sent down to reunite with him if they dared to have any other thoughts.

He could only think this way and try his best to arrange it this way. He really didn't want to let down Li Yuanji's final trust in him and the trace of brotherhood that Li Yuanji left for him.

After defeating Li Er, Li Yuanji stayed here for three days and then began to lead his troops back.

On the way back, Li Er sat in Li Yuanji's car, feeling the progress of returning home, and his heart suddenly felt a little hot.

When entering the territory of the Tang Dynasty, a brand new and wide road appeared before his eyes, and Li Er was even more shocked.

"Your Majesty, are all the roads in the Tang Dynasty like this?"

Now that they were not in private, Li Er sensibly called Li Yuanji "Your Majesty" without any other thoughts, and stared closely at the asphalt road in front of him.

Li Yuanji looked at Li Er with some shock, then laughed.

"This is a newly built road, but it is not available everywhere. It has only been built for a few years. There are only four such roads starting from Chang'an, running north and south and east and west.

The rest of the roads are still under construction. In ten years or so, almost every place will have roads leading to other places, and the roads in various places will eventually connect to these four main roads.

By that time, the exchanges between various parts of the Tang Dynasty will become closer, which will not only make it easier for the Tang Dynasty to assemble its army when it goes on an expedition, but will also make it easier for the people of the Tang Dynasty to travel to various places.

In addition to the roads you see, water transport roads are also expanding. Water transport roads are mainly used for commerce. Many commodities and many places can be transported by water faster than by roads, and it also saves costs. "

As Li Yuanji said this, he was filled with pride. It was all because of him that everything was possible. In the past few years, although only four main roads were opened in terms of road construction, a lot of resources were consumed in the construction of these four roads.

If there were no technical support and no machinery involved in the project, if the road was built in the same way as before, I am afraid that the people all over the world would be boiling with resentment.

The manpower required to build these roads is extremely huge. Even with the addition of various machines, a lot of manpower is still mobilized. It is because the Tang Dynasty is wealthy that it can give certain treatment to these mobilized manpower.

There was no need to worry about food at all, and there were even subsidies for clothing and money. This was why others not only had no thoughts, but also participated enthusiastically, and the construction progress was very fast.

Li Er was shocked when he heard what Li Yuanji said. It was not that he had never seen a highway before. The road connecting Chang'an to the surrounding areas was originally a highway.

But Li Er had never seen a smooth and wide asphalt road like the one he was walking on. The feeling of walking on it was better than mud, and it looked very easy to walk on.

As for transporting goods, Li Er could imagine how easy it would be on such a road.

"Your Majesty is wise. This road is indeed beneficial to the country and the people. It should be fully implemented in the Tang Dynasty."

Li Er praised Li Yuanji sincerely. He had not seen the water transportation, but Li Yuanji's ship was indeed very good. He had seen it before, but the ship he saw at that time was completely different from the ships used now. Li Er just didn't know it yet.

After hearing this, Li Yuanji just smiled and continued walking.

"Second brother, you must take a good look around when you return to the Tang Dynasty this time. A lot has changed in the Tang Dynasty. If you go back now, I'm afraid you may not recognize it."

After listening to this, Li Er became even more curious. He was particularly looking forward to the changes in the Tang Dynasty over the years. Just from the various differences he had seen so far, Li Er had already begun to yearn for it.

After another half a month, when they arrived outside a city, Li Er was just curious and didn't think anything of the railway tracks when he saw them.

Li Er looked at it and it was something he had never seen before. He knew it must have other uses, but he didn't ask until a train slowly came over. Li Er was completely shocked. This was because the train was all iron, with smoke coming out of it, and it was accompanied by a huge noise. It was running on the rails he saw, and it slowly appeared in front of him. Li Er was so shocked that he was speechless.

After taking a closer look, he was even more shocked. Such a huge piece of iron, without any traction, could yet drive on the road. Li Er was stunned.

Li Yuanji looked at Li Er's shocked expression and said with a smile: "This is a train and needs to run on a specific road.

Because it is made entirely of iron and is very heavy, ordinary roads cannot bear this weight, so it can only run on the kind of rails you see.

Nowadays in the Tang Dynasty, Chang'an already has such trains connecting the surrounding areas. However, due to the limited iron production and the large amount of manpower required to lay the tracks, there are no trains in most places today. Similarly, there are only trains in the area around Chang'an and on the four main roads.

We will take the train back to Chang'an later. We can go directly to Chang'an from here, but it will take a long time even if we take the train, so you should be prepared."

Li Yuanji was also proud as he looked at the improved train in front of him. These were all developed by the research institute after he gave it directions.

When the roads were built, the railways were also built simultaneously. Fortunately, the iron production of the Iron Bureau increased a lot compared to before, otherwise these four main railways could not be built because the amount of iron used was so huge and too much.

In order to expand the scale of iron production, it can be said that Li Yuanji vigorously promoted the establishment of steel mills in the Tang Dynasty. Especially in places with rich iron ore resources, steel mills were even more densely populated, and almost all heavy industrial industries were clustered together.

At that time, in addition to expanding the scale of the steel mills, all other iron uses were compressed, and each steel mill was required to fully produce rails. This mobilized a huge amount of manpower, material and financial resources, and it finally took nearly six years to complete the construction.

The most important factor in the successful construction of these railways was the track construction technology and bridge technology provided by Li Yuanji, otherwise they could not have been built so quickly.

Moreover, it was accomplished by bypassing some particularly difficult-to-handle places. Although there are detours in some places and it is not a perfect railway line, it is completely sufficient for the Tang Dynasty today.

This train played a great role in this expedition. It was not only used to transport the army, but also to transport weapons and supplies. This railway played a corresponding role.

Li Er listened to what Li Yuanji said. Although he still didn't understand what a train meant, based on what he saw before him, it seemed no longer important how a train was made.

Li Er was really shocked, especially when he heard that the Tang Dynasty had built narrow trunk roads in the east, west, south and north, and that trains had already started running.

When he saw the army collectively boarding the train, he suddenly realized that the mobilization ability of the Tang Dynasty army was incredibly strong. To cover such a long distance, they did not need to walk but could take the train directly. The speed must be faster than the car he took, otherwise how could they use the train.

Not only is the army's ability to mobilize and assemble very quickly, but the allocation and transportation of logistical supplies are also completely different from before.

In the past, the transportation of food and other supplies would be a huge problem if the battlefield was far away. Sometimes, when going to war, the difficulty was not in fighting but in transporting logistical supplies, which was the key.

It can be said that in the past, long expeditions were basically unrealistic. Even if the transportation routes were confirmed after repeated discussions by the court, as long as the location was remote, there would always be huge difficulties. This was because the teams transporting cold dishes and other supplies consumed a lot every day, and the food and supplies raised were often more than what the army needed.

In particular, a huge amount of manpower is required, and enough young and strong people must be mobilized for transportation. However, if too many young and strong people are mobilized, it will affect the development of people's livelihood. Because once too many young and strong people in people's families are mobilized, it will affect the farming and life of people's families. This is inevitable.

Now that we have trains, almost all of these can be saved, it takes less time, and there is no need to conscript so many civilians to do the work. Maybe a little manpower will be needed when unloading the supplies, but under this model, it can be solved by simply sending troops.

Even if there is still some distance left, the large vehicles he has seen along the way can solve the problem perfectly. The transportation of supplies can even be synchronized with the army, and there is almost no need to worry about the problem of insufficient food and fodder.

Li Er gradually came back to his senses, feeling deeply moved. If the Tang Dynasty back then could have done this, he couldn't even imagine how powerful the Tang Dynasty would have been with him, Li Jiancheng, and Li Yuanji. Perhaps it would be even more powerful than the current Tang Dynasty?
Li Er followed Li Yuanji into the train and dared not think about it anymore. Whenever he thought about it and Li Jiancheng, Li Er would feel a little regretful. If he had known the result would be like this, he would still launch the Xuanwu Gate Incident, but would not choose to kill Li Jiancheng.

The Xuanwu Gate Incident was his only hope. Li Er was determined to give it a try no matter what. Whether it succeeded or not, he never regretted it.

The only thing was killing Li Jiancheng. Even when he was the emperor of the Tang Dynasty, he felt sad when he thought about it, and now he felt even more uncomfortable.

In fact, when he was a child, his relationship with Li Jiancheng was very good, far better than that with Li Yuanji.

Even Li Yuan's cavalry, at the beginning, he worked closely with Li Jiancheng, and the relationship between Li Er and Li Jiancheng was still good at that time, but later, it gradually began to change, and they became enemies, and became mortal enemies, because he wanted the position of emperor.

Li Er walked into the train and looked at the two rows of benches inside. The soldiers were sitting on them, and in the middle, there were still more people standing.

Li Yuanji's voice also came at this time.

"In order to maintain space and accommodate more people, there are only so many places to sit, so they will rotate. Moreover, one of every two carriages has beds, and they will also rotate so that they can maintain a certain amount of sleep and keep their energy sufficient.

There are still many things that are not perfect now, and things will be better once they are perfected.

At night, these aisles will be covered with quilts, leaving a small aisle where people can lie down and sleep. Even on the train, there will still be people on duty in rotation to prevent accidents so that the army can join the battle as soon as possible.

Our carriage is in the front, follow me."

The carriages are arranged like this for the time being. Although Li Yuanji is vigorously promoting cotton planting in the north, Xifu, Tibet and other places, there is still not enough cotton.

Nowadays, cotton is not only used in the military, but also widely used by civilians. It can be said that even now, the Tang Dynasty is still short of cotton. It will take at least two or three years to completely alleviate the problem of cotton shortage.

The interior arrangement of military trains is to maintain as much space as possible in order to facilitate the transportation of enough troops to the battlefield at one time. There are few beds and insufficient cotton fabrics, so it can only be arranged like this for the time being.

People still need straw or millet straw to sleep on. It is better to have it than nothing, especially when the weather is cold.

Li Yuanji brought Li Er to the carriage where they were resting. It was much more spacious, as if they had come to a room, with all kinds of things placed there.

The only thing that is the same as everyone else is that I have to endure the same bumps in the train, and the time is the same. (End of this chapter)