"At least you have been the prime minister. Why do you even say that cement is expensive?" Jiang Zhen made a funny joke.

"I'm afraid the princess doesn't know. In the State of Song, your cement road has the title of Baiyan Road. First, everyone needs to take this road to buy salt. Second, the price of cement is cheaper than that of white salt. Paving with white salt is cheaper than paving with cement. Guo Fan said sourly, "It's just that you have money that you dare to use it like this."

"The purpose of building this road is to facilitate the caravan to come to Lanhe County, which brings great invisible benefits to Lanhe County. And... the cost of cement is not high, but my heart is dark and expensive.

"Isn't it expensive?" Guo Fan was excited, "In this case, won't the cement road be able to cover Jiang Guo in the future?"

Jiang Zhen nodded, "Of course, but wait until I can make the decision in the future."

Jiang Zhen can't spend much money to build cement roads, but the cost of others to build cement roads is comparable to paving roads with gold foil.

Unique technology and monopoly business, naturally want to set the price and how to set the price. Jiang Zhen said that a load of cement sells for one or two gold, and those who want to buy can naturally have to pay for it.

Moreover, the effect of cement is wonderful. In the eyes of outsiders, it is very normal for the high cost. Jiang Zhen made money, and no one dares to say that she is unkind.

There is only one cement workshop in Lanhe County. The output of cement is low, and the supply has been in short supply. Everyone is queuing up to buy it. No one thinks it is expensive.

But everyone is not luxurious enough to pave the road with cement. They just buy a few pieces of cement to go back and pave the paths and yard at home, so as not to be muddy in the rain and inconvenient to walk.

There was no cement in the princess's house. When King Jiang gave the house, he gave him a mansion, and the paths in the garden were paved with bluestone slabs and pebbles.

Guo Fan saw through the window that a place on the left side of the road was surrounded by boards, and there were slaves working in the fence. He asked curiously, "What are they doing?"

"Purplenish the way. There are too many convoys on this road, and the goods are heavy. Occasionally, the road will be crushed, and it needs to be repaired in time with cement. Jiang Zhen explained.

"I'll get out of the car and have a look." Guo Fan wanted to see what the crushed cement road was like compared with the dirt road full of rut.

When he looked closer, he found that it was just a few long cracks. He was speechless, "But it's just a little broken. It doesn't need to be repaired. If the roads of the whole country are maintained like this, how much manpower and material resources will have to be spent..."

Jiang Zhen lay out of the car window and replied, "You think too far. Now it's the road of Lanhe County, of course, we should take good care of it.

The two were talking, and a caravan came in front of them. When they saw Jiang Zhen's flag, they immediately stopped in place and waited for Jiang Zhen to pass first.

Guo Fan rode a horse and walked next to Jiang Zhen's carriage, which directly attracted the attention of the people in the opposite caravan.

Jiang Zhen could even see the opponent's shocked body.

"Look at the clothes. It should be the caravan from the State of Song." Guo Fan commented calmly.

Jiang Zhen whispered, "The way those people look at you is not right."

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