Hearing this, the old patriarch glanced at Lu Chen in some shock and asked, "Sage, are you trying to unify these tribes?" ”

"It's not unified, after all, four of the five tribes have been wiped out, and I'm going to gather these people. Pen & Fun & Pavilion www.biquge.info see how many people there are, if there are more than 1,000 people, we will build a city! Lu Chen said with a smile.

Although Lu Chen didn't know how many people had escaped, he could be sure that there must be a lot of them. After all, the Holy Soul Tribe can only send more than a hundred people, even if you add the more than thirty people sent by Tubo to assist them, there are only one hundred and thirty or forty people in total, and it is impossible to wipe out all the people of a tribe.

You must know that Lu Chen exterminated the Holy Soul Tribe this time, but he gathered nearly a thousand people, so he was foolproof. Moreover, Lu Chen learned from the mouths of these Holy Soul tribes that they just wanted to destroy the holy relics of various tribes. Because in the hearts of these tribesmen, without the holy relics, the tribe is equivalent to destruction, but even if there is still a person alive, as long as the holy relics are safe, then the tribe still exists.

Lu Chen shook his head, he couldn't understand the thoughts of these tribesmen. However, according to their thinking, Lu Chen has the holy relics of the other three tribes, then their tribe is here in Lu Chen, as long as they hear the news, these people should come over.

In the afternoon, the soldiers brought by Lu Chen emptied all the useful things in the entire Holy Demon Tribe, and even some better tables and chairs were not left. When it was decided to empty everything, Lu Chen led more than 1,000 people on the return journey.

Lu Chen had already conceived that he was going to build a city near the Ancestral Stone Tribe. If you only look at the geographical location, it is better here from the Holy Soul Tribe, and there is also the foundation laid by the Holy Soul Tribe. But Lu Chen wanted to get closer to some Datang, after all, he still had the position of a general in Datang, and once the Tubo people came, he could retreat to the territory of Datang.

After returning to the Zushi tribe, Lu Chen told Li Xinran, Long Yan and others about this idea, and when they heard Lu Chen's decision, these people were all stunned in place, unable to come back to their senses for a long time.

After staying for a while, Li Xinran was the first to come back to her senses, but saw her clapping her little hand lightly, and smiled with interest, "It seems interesting, let's build a big city, a city like Chang'an City!" ”

Lu Chen "............."

Longyan "............."

At this time, the old patriarch also slowly recovered from the previous shock, although he knew Lu Chen's idea of building a city before, but he didn't expect that Lu Chen's plan would start to be implemented as soon as he came back.

Lu Chen said with a smile: "Let's build a relatively small city first, and if there are more people in the future, we can also build an outer city outside." Now the main purpose of building the city is to prevent the revenge of the Tibetans."

Hearing this, the old patriarch and the others suddenly realized that they had killed more than a hundred Tibetan soldiers after all, and once the Tibetan people knew about it, they would definitely send a large army to avenge the more than 100 soldiers."

Hearing Lu Chen's explanation, these people all nodded in agreement. In fact, Lu Chen built this city in his heart not only to defend against the Tibetan army, but also to establish a base of his own. If he wants to develop his own power, he must have a place to live!

Now that it has been decided, let's start a detailed plan, and it takes a lot of labor to build the city, especially in the Tang Dynasty, which was technologically backward. However, Lu Chen didn't need to build much of a city. At present, it is enough for him to build a city that can accommodate a few thousand or so people.

However, it would take a lot of people to build a small city that could accommodate a few thousand people, and Lu Chen's subordinates would have a total of more than two thousand people, even if the Zushi tribe and the other three tribes came to join them, it would not exceed three thousand, including some women and children.

Lu Chen frowned slightly, population is indeed a problem, where to get so many people to come and build a city?

In the end, Lu Chen decided to keep everything simple, and first built the surrounding city walls and some defensive measures, after all, their top priority was to defend against the attack of the Tibetans.

After the decision was made, Lu Chen began to work, although the technology here is backward, but Lu Chen, who has advanced knowledge, still provides many methods for these people, which greatly improves efficiency.

However, two more days passed like this, and when everyone thought that the speed of building the city was already fast, Lu Chen frowned again, he didn't expect that it would take such a long time to build a city in this Tang Dynasty.

He asked the old patriarch, and the answer he got was about half a year, but this time was still too long for him, he couldn't stay for more than half a year with his troops, and his grain and grass would only last for more than three months at most.

Lu Chen was alone around the mountain range, meditating and trying to find a solution, now the stones they used to build the city wall were all made of local materials, and the difficulty was how to glue these stones together. The Tang Dynasty used white lime, but these things did not work very well to solidify these huge stones.

Thinking of Bai Lime, an idea suddenly flashed in Lu Chen's mind, and then he slapped his forehead and said to himself: Why are you so stupid? Now that you have white lime, you can make cement!

In his previous life, when he was in college, he minored in chemistry and chemical engineering, although he did not really participate in the production of cement technology, but he still knew the raw materials and steps.

Back in the ancestral stone tribe, Lu Chen immediately had a large amount of limestone mined, and then he asked people to find some clay. According to the memories of his previous life, Lu Chen asked people to grind and mix the two together, and finally Lu Chen commanded everyone to build another cave, and after the cave was built, he put these mixtures into it and calcined.

A day later, Lu Chen asked people to take out the finished product from it, only to see that it was some black-brown powder, Lu Chen took out a handful, and then mixed it with some water, under the gaze of everyone, this small handful of black-brown powder quickly condensed.

Lu Chen pressed it hard with his hand, although it was not as good as the cement in his previous life, but it was more than enough to cast the city wall, as for Long Yan and the others beside Lu Chen, they were completely stunned, what is this? It's so amazing!

Looking at everyone's shocked looks, Lu Chen chuckled and said, "This is just a little more soil than ordinary white lime, you don't have to make such a fuss, the name of this thing is cement, I also saw it from a miscellaneous book when I was in Fuzhong"

Everyone nodded blankly, but it could be seen that the look of shock on their faces had not diminished in the slightest.

Although everyone couldn't understand the mystery, but since there was the big killer of cement, the speed of building the city wall had increased several times, Lu Chen asked Long Yan and the others again, and the answer was that the inner and outer city walls could be completed in one month!