Long Xin Yutu rushed back to Yanqi Kingdom directly, but what Long Xin Yutu didn't know was that when he returned to Yanqi Kingdom, the entire Yumen Pass of the Han Dynasty had also entered the final stage of sorting.

As the successor of the city lord of Yumen Pass, Zhao Er was discussing the entire Yumen Pass with Wang Luo at the moment.

"When will this last bit of work be completed?" Zhao Er asked seriously.

"It will be completed tomorrow, and the rest of the work will soon enter the winter this year, according to our planning, the winter will affect the concrete structure, so we will not construct in winter, but we will store and prepare the entire construction materials in winter, and the accumulation of materials will continue to be carried out at that time, but we take into account the living situation of the city, so the materials are selected to be stacked in the northeast direction." Wang Luo immediately spoke.

"Wang, this time it's going to trouble you!" Zhao Er immediately nodded.

"Don't worry, Lord Zhao, I can save it, don't say anything else, this time it is related to the marriage of the leader, if I don't pay attention to it, then it is estimated that I will be eaten alive and flayed." Wang Luo joked, of course he knew why Zhao Er was nervous.

Because Yumen Pass is about to receive the envoys of the Tang Dynasty, and not only the envoys of the Tang Dynasty, but also to be officially open to all foreign merchants, which means that there will be at least tens of thousands of merchants in Yumen Pass alone.

This is not because of the increase in these merchants, and the other members that followed, but more importantly, when Guazhou was officially handed over to Dahan, then many of their merchants in Guazhou would definitely come to settle in Yumen Pass of Dahan.

Therefore, Wang Luo now has a heavy responsibility on his shoulders, just like all the houses in the entire Yumen Pass, except for the houses prepared for the families of these craftsmen and the more than 1,000 people who originally followed the general, there are only 1,000 surplus houses Wang Luo and they only have!

The rest is a large number of areas without buildings, that is, these areas will definitely not be able to be built, at least this year.

If you want to build a new house, you will have to wait until next year to go to the city industrial bureau for approval.

Then, the price at which these 1,000 houses want to be sold is probably an astronomical amount!

Of course, these 1,000 houses are only residential houses, not including those commercial houses built along the several streets of the entire Chang'an City, and the buildings of these commercial houses are all in the European style as the chief said.

Wang Luo didn't know what the European style was, but I had to say that this architectural style could make the most of the advantages of their concrete, and the number of wood used was very small, and the number of stone used was more, but the stone was more of a decoration on the outside.

The interior is all made of concrete.

In fact, the reason why Huo Gang adopted such a building is naturally because, firstly, in the Western Regions, the Chinese garden style is not very suitable, because there are too few trees, and secondly, the pure wooden structure is in this state of low firefighting ability in ancient times, once it catches fire...... Then you don't have to think about it to know the result.

Burning a large area, that's really not for fun, if someone sets fire, it is estimated that it is not impossible to lose half of the city.

The European-style building is relatively simple, and it is easy to rescue if the building catches fire, and it is not easy to produce the kind of fire that burns half the city at once.

Another reason is that the glass used in this kind of building is relatively small, and at present, they have no way to produce too large glass, not that they can't produce it, but it is not necessary, the cost is too high, and these shops naturally can't use such glass.

As for whether anyone is willing to use such a large glass in the future, that is the next thing, when the time comes, it will be customized, as long as the money is paid, these factories in Huogang Industrial City are willing to sell anything.

Therefore, now the entire Yumen Pass can be said to be the most beautiful are these main streets, in addition, other areas without buildings have been surrounded by mud walls, and you can't see the bare land inside.

The hardening of the streets has been completed, and the entire city has been cleaned every day, so to speak, the whole city has become incredibly clean. What Wang Luo admired the most was the sewer system designed by the leader and the septic tank outside the city to dispose of the feces.

It is said that the treated fertilizer can be used directly in the land, which can increase the fertility of the land, which they all know, but the treatment and design principle of the septic tank have been studied by Wang Luo for a long time.

He is not very professional in this area, but Wang Luo's current research on architecture is definitely ahead of everyone in this era.

In particular, the construction of the General Assembly Hall, which will begin next year, will be their most important building in the next two or three years, and will be completed within the first five-year plan, and even faster than the city wall.

Because there are some materials, after the construction of the city wall is completed, it is not convenient to transport them to the city.

In fact, because of this incident, the South City Gate around Yumen Pass, that is, the Suzaku Gate where the monument is aligned, as well as the Suzaku Street, which is the central axis of the entire Yumen Pass, as well as the Great Hall, plus the villa where the leader lives, are all on the same central axis.

There are two such central axes, namely the Suzaku Gate and Xuanwu Lake in the north and south, and the Qinglong Gate and the White Tiger Gate in the east and west.

There will be no gate on the north wall, because beyond the north wall is the lake that is still expanding further north, and the area of the whole lake is already very large, because there is no north gate, so this lake is simply named Xuanwu Lake.

Of course, Wang Luo knows that there is no gate on the north side of the city wall on the bright side, but to be precise, there is also a secret passage on the north side of the city wall, but outsiders don't know about this passage.

"Then please trouble everyone, Wang, pay more attention here at Yumen Pass recently."

"Don't worry, everything we should have prepared has been prepared, and everything that should be covered has been covered." Wang Luo smiled and said.

"By the way, how long will it take for our walls to be built?" Zhao Er asked with some curiosity.

"If nothing else, it can be done next year." Wang Luo thought about it, Zhao Er was the city lord of Yumen Guancheng, so such news could naturally be known.

"Next year?!" Zhao Er gasped, didn't they just lay the foundation? The main building of the entire city wall has not yet been built, and it will be completed next year?

"Really, Wang, our city wall is more majestic than the city wall of Chang'an City, you just finished laying the foundation this year, and it will be completely completed next year?" Zhao Er was a little incredulous.

"Of course, you should know how fast our concrete construction speed is, in fact, what limits our construction progress is only the output of cement and the output of rebar, but the output of rebar has already come up, after a winter of production, the number of storage can definitely keep up with the construction next year."

"You don't know that those guys in the industrial city have been crazy lately." Wang Luo shook his head slightly, the expansion speed of the industrial city is too fast, so fast that Yang Wu, oh, that is, Yang Lao Wu, he changed his name, because it is said that this guy is an official, and Yang Lao Wu's name is not very good, so he changed a homonym for himself, called Yang Wu.

Yang Wu had already approached him more than once, asking them to build the road from the industrial city to the coal mine next year, otherwise, the speed of coal excavation and transportation would not be able to keep up with the speed at which they could burn things.

After all, now they need coal to burn everything.

You know, there are at least 30,000 or 40,000 coal workers digging coal every day in the coal mine, but fortunately it is an open-pit coal mine, otherwise, there is really no such large mining volume.

"Even so, you're too fast? Can it be built in a year? Zhao Er was a little stunned.

"We're building in a new way." Wang Luo thought about it, but he didn't hide it, because when he started working next year, he would definitely need the cooperation of Zhao Er, the city lord.

"This is also proposed by the chief, first of all, the outer side of the city wall, the construction of a reinforced concrete structure about 5 meters thick, and then the construction of a reinforced concrete structure about 3 meters thick on the inside of the city wall, as for the middle part, it is mixed with a small amount of cement, river sand, gravel to mix, in the case of thick steel bars fixed into different squares, directly filled." Wang Luo said quickly.

"This ...... Direct filling? Can this be strong? Zhao Er was a little confused, in this case, can this city wall become strong?

"Hehe, let's not say that the five-meter-thick reinforced concrete is almost impossible for anyone to destroy, just say that these parts in the middle, don't look at them, although they are only a small amount of cement, river sand and gravel mixture, although it is not as strong as concrete, but after it is thoroughly dried and tamped, in fact, the city wall in the middle is much stronger than the old city wall of Yumen Pass."

Wang Luo shook his head slightly, in fact, they had done tests.

The filling part in the middle does not seem to be strong, but this is relative, you have to compare it with whom, compared with reinforced concrete, it is definitely not as strong as that, but if you compare it with the wall of ordinary green bricks, it is much stronger.

So on the whole, there's absolutely no problem.

In fact, the filling part in the middle is a bit like the layer under the tiles of the later house decoration, but the gravel is added to it, and after it is completely dried, the degree of solidity is not too bad.

Of course, there is another reason why it is filled like this, that is, the abandoned city wall of the original Yumen Pass can be filled in directly.

To be honest, for this era, don't say that the middle filling is these things, even if the middle filling is dirt, there is no doubt about the strength of the entire city wall, then the thickness of the concrete is not something that can be dealt with in this era of cold weapons.

When the future surpasses the era of cold weapons, there is almost no need for the city walls to exist.