I was engaged in infrastructure construction in the Han Dynasty [Transmigration Book]

Liu Che took a deep breath and opened the document. While reading it, he was thinking about how to deal with Liu Tan when he came back.

It happened that Liu Ju was discussing politics with him today. Seeing Liu Che's aura change from time to time, occasionally smiling and sometimes looking angry but not so angry, Liu Ju was also a little itchy - what is his brother? What did you do?

After a while, Liu Che suddenly laughed and said, "Using copper as a mirror can straighten clothes, using people as a mirror can reveal gains and losses, and using history as a mirror can tell rise and fall. According to my son, what do you think of these few words?" Sample?"

After hearing this, Liu Ju didn't answer immediately, but savored it again and again, and finally said with admiration: "To be able to say such enlightening words, this person must be a genius in the world, but what kind of talent did the emperor discover?"

Liu Che smiled and said, "That's what Tan'er said."

According to Liu:? ? ? ? ? ? ?

Liu Ju's expression was blank for a moment, he really couldn't connect the younger brother who was tossing new food all day with three sentences.

Liu Che simply handed the information to Liu Yue and said, "Let's take a look first."

Liu Ju got up and took it with both hands, and looked at it impatiently. At the same time, he was a little puzzled. According to the time, his younger brother should have started to set off and come back. Could it be that something happened on the way that made his father look satisfied and dissatisfied? satisfy?

However, Liu Ju knew why Liu Che's expression was so strange just by looking at it. To be honest, there were only some slight changes in Liu Che's previous expression. If Liu Ju didn't know him very well, most people might not be able to see him. Mood ups and downs.

And Liu Ju's ability to control his own emotions is obviously not in place, so his expression became extremely distorted. Even after seeing the last three sentences Liu Tan said, he couldn't help but raised his head and said: "Fifth Brother...Five Brother, is this going to call back?"

Liu Che said in a cool tone: "That's not the case, I can't think of why he suddenly wants to build a city."

Liu Ju gasped: "Why didn't I know he was so angry before?"

Liu Che glanced at him: "You still don't understand him."

But Liu Che saw Liu Tan's nature at a glance at the beginning, round on the outside and square on the inside. He kept saying that Liu Tan was like Wei Qing in this respect.

Otherwise, Wei Qing's personality is slightly dull, and his temperament is basically different from Liu Tan's. How could Liu Che feel that he is similar to Wei Qing?

When Wei Qing returned to Chang'an, he was quiet and silent as if he was an ordinary person, but on the battlefield he was an invincible god of war. The gap was too great.

Liu Ju didn't think so much, but said very worriedly: "He is so stupid. The conditions in the Western Regions are difficult, and he is only suitable for raids. He himself knows that the supply line is a problem, and he needs to build a city. How can people let him build the city comfortably? ? Father, hurry up and order Fifth Brother to come back."

Liu Che said noncommittally, "There is no rush."

He was not in a hurry, but Liu Ju was a little anxious: "Father, my fifth younger brother doesn't know the heights of heaven and earth when he is young. Fighting wars is no joke."

Liu Che chuckled: "You are really not prepared to be that little bastard? If he acted impulsively, he wouldn't want to build a city, and haven't you seen the place he chose? Not only is it aimed at robbing the country, but it can even monitor vehicles Shiguo, besides the river valley, has the convenience of the terrain, even if it is suddenly attacked, it can use the river valley to escape quickly and wait for support, this is not something that can be done on a whim."

Liu Ju was stunned for a moment after hearing this, and looked down at the map, and suddenly he noticed something: "Huh? Why does this map look different from the previous one?"

Liu Che sighed: "It's also newly created by him. It is said that it stipulates the latest drawing method of the map, but the image is much clearer. I don't know what the new sand table he created looks like."

Liu Ju's expression was distorted again: "Is he really just there to see off his relatives?"

Liu Che sneered, of course not, he was still teasing Danyang to engage in Wusun on the way to see off his relatives!

This meant that Liu Che saw that the relationship between Danyang and Liu Tan was not bad, and that it would not do any harm to the big man to engage in Wusun, so he didn't take care of it, otherwise he would have ordered Liu Tan to roll back as soon as possible.

Liu Ju raised his head and looked at Liu Che: "Father, is there any expert around Fifth Brother?"

Liu Che opened his mouth and said, "Huo Guang, Jiang Chong, Li Buyan, Wei Buyi, which of these do you think is right?"

As for the other Li Guangli, Liu Che didn't want to mention it anymore. How could he not know that Li Guangli was bullied by Liu Tan on the first day he arrived there?

The next morning, I took another sip, and when I woke up again, I had a splitting headache. I asked a doctor to prescribe medicine, and the headache became worse. In the end, I had to recuperate weakly in the tent. This person was basically useless.

Liu Che wasn't angry about Liu Tan messing with Li Guangli like this. After all, he was the one who sent him there, but when he thought of Li Guangli being messed up by Liu Tan so effortlessly, he felt a little ashamed, and wanted to let this guy fend for himself. up.

As soon as the names of these people were reported, Liu Ju became silent. Huo Guang... let alone, if he had that ability, he would not have gone to the Western Regions until now, let alone Jiang Chong, he is a villain.

Although Li Buyan and Wei Buyi were born generals, one is simple-minded and the other is taciturn, neither of them seem to have that kind of talent.

So... This is really Liu Tan's decision?

Liu Ju said with some hesitation: "Could it be... Fifth Brother still has such a talent?"

Liu Che suddenly sighed: "Let him go, I want to see what tricks he can come up with."

Liu Ju looked at Liu Che, and he understood why Liu Che sighed, because even if Liu Tan had such ability, it was probably only this chance, and next time he would not be able to work hard enough to go to the Western Regions.

It is also impossible for the princes and kings to lead the army. The princes and kings of their old Liu family... one by one are restless. Now Liu Che does not even dare to let the princes and kings handle the affairs of the princes. Basically, they are all in a state of being emptied, how could the princes and kings be allowed to lead the army?

Thinking of this, Liu Ju suddenly felt a little depressed. He even thought that it would be great if he could keep Liu Tan in Chang'an. If he wanted to go out, he would be allowed to go out, and he would be given the tax of the fiefdom. It doesn't matter if you lead troops like this. There is no basis and the return is right under his nose, so what is there to suspect.

It's just that Liu Ju didn't say it after all, but just nodded silently.

Both father and son were very silent, but they probably didn't expect that Liu Tan just clicked on a place at random, and it never occurred to them that Liu Tan didn't know anything about terrain and landforms.

As for why the Embroidered Clothes Emissary didn't report it... It's not because Liu Tan secretly warned not to write the dialogue with the two lines of the poem that dared to teach the sun and the moon to change into a new sky!

Liu Tan really didn't know who the Embroidery Messenger was, but all he had to do was order that anyone who heard it should not talk nonsense, and those who talked nonsense would have their tongues cut off and sent to be dumb slaves!

After thinking about it, the embroidered clothes messenger felt that these two lines of poems seemed to be wrong. In fact, they should have submitted it, but for some reason, they erased this paragraph by accident. Causal changes appear too prominent.

After he came to erase it, the embroidered clothes emissary thought it was to save his own life. If the higher-ups felt that Liu Tan was restless and wanted to clean him up, the fifth prince would definitely not have any serious problems, at most he would be kicked To the fief, but he, the embroidered emissary who has been following the fifth prince, is not sure what will happen.

Or...don't talk about it, it's too late to send it up when there is a sign of it.

So a beautiful misunderstanding was formed.

Liu Tan didn't know that Liu Che and Liu Ju both had hopes for him and hoped that he would not be so outstanding. At this time, he was planning the launch of the new city.

To be honest, the sewer engineering in this era is actually quite backward.

Of course, it is divided into places, the Weiyang Palace is very high-end, but once it is outside the scope of the imperial city, the water in other parts of Chang'an City is not so good, which also leads to the filthy side of the glamorous Chang'an City, the richer the area, the cleaner it is Clean and tidy, the smell is unbearable even if it is not stinky in the slums.

In fact, this was also one of the reasons why Chang'an was no longer the only capital in the middle and late Tang Dynasty. There were villages around the city without sewage facilities, and domestic sewage polluted the groundwater. After a long time, it exceeded the capacity of the natural environment, so the water quality deteriorated. It started not so well.

The high-ranking officials and nobles were naturally the first to discover, so they moved to Luoyang, while the common people naturally stayed in Chang'an.

Oh, this is what Liu Tan heard from other people.

Now the sewage in Chang'an City is discharged to the Weihe River. It is impossible for such a big city to change, and Liu Tan does not have the courage, so he can only arrange it here in the new city, so that at least nearly a thousand people can eat and drink. Sarah don't go wrong.

You must know that the water resources in the Western Regions are much more precious than those in Chang'an. If there is pollution, it will be a rhythm that you don't know where to move.

It’s just that Liu Tan is not a civil engineering or water conservancy major, and he doesn’t know much about the design of sewage discharge. The only thing he has is that he still remembers the historical materials he read back then. There are schematic diagrams of sewage discharge in various dynasties. Not too difficult.

The only more difficult thing is that most of those schematic diagrams discharge sewage into the river, and looking at all the named national capitals of flower growers, there is basically a river around them.

Liu Tan here... there is an empty river valley!

Where can the sewage be discharged so as not to pollute the water source?

He thought about it for a long time, and finally decided that it is best to build a biogas digester, which can not only solve the pollution problem, but also provide another kind of energy. Otherwise, firewood is an extremely precious material in this Gobi. When it is cold, there are no resources for heating, so it is not possible to resist with a healthy body.

The setting of the biogas digester should also follow the principle of proximity. If it is in the Central Plains, it should be closer to the farmland, but here... there is a fart farmland, so as long as it is in the surrounding area.

And because of the special nature of biogas, it is very difficult to transport, so it was simply set up five miles southeast of the city.

After determining the location of the biogas digester, Liu Tan asked people to dig a hole first. The pit of the biogas digester does not need to be very large. Even for high utilization rate, the biogas digester should follow the three principles of round, small and shallow.

After sending people out, Liu Tan began to design the direction of the city's launching and the planning of the city's buildings.

As a result, he racked his brains and thought for a long time. Just halfway through the drawing, Jiang Chong hurried over and said excitedly, "Your Highness, there is a gold mine!"

Liu Tan:? ? ? ? ?