The Minister of household raised his feet and walked forward.

This area is very flood prone in spring, summer and rainy season. The water conservancy scheme put forward by the old man of the Ministry of work is really expensive!

If the silver is not in his charge, he doesn't think about how to save it!

They walked a few steps. Foreman Fu saw the warmth coming and reminded the two stone workers, "be careful, don't hit your feet!" Then he went to the warm two: "Lord Fang, Princess Hui'an."

The Minister of household stepped on several green stone slabs that had just been paved. He was very down-to-earth. He smiled and said, "foreman Fu, your road is just paved, flat and neat, and there is no stumbling at all! This green stone slab is well beaten! How much silver is such a good green stone slab?"

Foreman Fu smiled: "Lord Hui, this is the most flat bluestone board. Both sides are flat. You get 50 Wen a piece."

Princess Hui'an requires the best materials, so they are more expensive.

There are also very cheap ones, such as twenty cents a piece and ten cents a piece. Those are not so flat, square and time-consuming!

“........”

Fifty dollars a piece?

Princess Hui'an is so rich!

The Minister of household looked at the long excavated subgrade. The bottom layer of the subgrade was also paved with a layer of marl and sand, which was compacted and flattened with huge rolling stones as the base. Then spread the slate!

For such a short road, at least tens of thousands of bluestone slabs have been built, and then the silver of artificial and other materials can't be built without three or four thousand Liang!

Now the roads in the city are not paved like this except for the roads around the dignitaries!

It's too expensive.

The Minister of the Ministry of household thought that Princess Hui'an could not repair all the roads in the outer city. Even with the cheapest bluestone slab, it would cost a lot of money to repair such multiple roads!

Moreover, the cheapest bluestone slab is uneven, bumpy and difficult to shop. It's not easy to use in the city, that is to say, it must be at least a medium thirty yuan

The Minister of household felt a little dizzy when he thought about it.

"It's not easy to polish such a piece of bluestone?" Warm asked.

Fifty Wen a piece is cheap.

So thick, so big!

Foreman Fu nodded: "it's not easy, otherwise we can pave bluestone roads everywhere in Nalan. Why is there only bluestone roads in the city? It's because of trouble!"

"In fact, the bluestone slab is heavy and difficult to polish. It takes time, effort and money. Is there any way to change the way of road construction without bluestone slab?" Warm think of the modern road.

I also thought of the famous Qin Zhidao, which seems to be built with mirage ash.

In this era, the road pressure is not as great as that of modern times. After all, there is no heavy truck, just a carriage. The freight carriage weighs only a few hundred kilograms!

It is estimated that it should still be affordable.

I don't know the warmth, but I'll know it after trying!

The reason why mankind has modern civilization and the development of science and technology is not that it has been constantly explored and tried out?

The Minister of household jumped with his left eye and jumped with his left eye!

Does this mean that Princess Hui'an has a better way to build roads?

"Does Princess Hui'an have any good way?" Foreman Fu knows much about warmth.

She designed the road and drainage system more reasonably than she thought.

No wonder the young master and the foreman of Ningyuan County spoke highly of her.

"In fact, I don't have any good way, that is, I have to use stones anyway. It's troublesome to polish such a large bluestone slab. I don't know whether it's OK to use gravel mixed with yellow clay lime mortar instead of bluestone slab. In this way, the road should be relatively flat!" Warm began to guide foreman Fu to change the construction method of the road.

Don't underestimate the wisdom of the ancients. There is no reason why the great wall can stand.

But when it comes to roads, the roads of ancient Rome are world-famous.

All roads lead to Rome!

The roads in ancient Rome were more than 400000 kilometers long, enough to circle the earth ten times.

However, the surface of Roman roads is also paved with stones, and the foundation is very good. The foundation has four layers.

It's not unreasonable to be famous all over the world.

But there's no need here. It's more time-consuming and laborious.

Foreman Fu shook his head: "no, it's probably no problem for people to walk, but I'm afraid it's easy to crush the carriage, especially the horse full of goods. It's estimated that it will be crushed in a year and a half day after day, year after year! There's no thick bluestone slab that can be used for a hundred years!"

The Minister of household nodded.

Look at the stone road in the city. It has been more than 100 years since the founding of the people's Republic of China, and it is still well used!

In this way, thousands of liang of a road is actually quite cost-effective.

After more than 100 years of use, I don't need a penny every day!

Warm smiled: "the road paved with bluestone slab can be used for a hundred years. I think it's good, practical and easy to pave in the city! But don't you have to pave the official road well?

There is a saying that the road leads to wealth. The road is easy to go, but it brings a lot of convenience to merchants and saves a lot of time.

If the journey can save half the time, there are many fresh goods between the north and the south! Can the people's living standards in the two places be improved to a higher level? "

Then the emperor came back with some officials.

The party stood on the side listening to the conversation between the three.

Minister of household: "official road paving? No, even if the yellow mud lime mortar is mixed with gravel, the hardness should not be enough! The paving will soon break down! This is not a waste of money and energy?"

Foreman Fu nodded: "these gaps used to bond the stones are still feasible. After all, there are stones that bear almost all the weight."

Warmth continued to induce: "what if you add some iron branches to bind the scaffold, and then mix the gravel to bear most of the weight?"

When the Minister of the Ministry of work heard this, he was disdained and almost laughed. However, because Nalan Jinnian was around, he dared not, but said, "Princess Hui'an said to use iron? Princess Hui'an, do you know how valuable iron is? Do you know what iron in Nalan is used for?"

Can iron be used indiscriminately?

Use iron to pave the road?

Why didn't she say to pave the road with gold?!

I'm pretending to understand. Nonsense!

Hearing the warm words just now, the Minister of the Ministry of work felt that Princess Hui'an's reputation was actually difficult!

Her credit may really be given to her by King Jin in order to improve her identity!

Now she has credit for farming and military. Do you still want to make credit for paving roads and bridges?

This is my field!

His credit must not be robbed by others!

King Jin can't!

Foreman Fu: "Princess Hui'an, iron is very expensive and difficult to refine. It's better to use green slate than iron!"

(end of this chapter)