"Improving papermaking?" Li Siye raised his head and thought for a while, and asked in surprise: "Those Sasanian gold coins of yours were all exchanged for paper from your family's paper mill?" ”

"Yes, a big part of it." For other parts, Dai Wang didn't want to explain too much, and Li Siye didn't have the curiosity to learn too much about Xu Bin's life in Chang'an.

"My improved papermaking technology not only improves the papermaking process, but also saves materials, so that most of the pulp is not wasted, and the raw materials are easy to extract, such as trees, dead grass, wheat stalks and barley stalks."

"That's good," Li Siye nodded approvingly. Papermaking has been quite popular in the Tang Dynasty, there are dozens of types of paper alone, and various classifications can also meet various needs, there are short white curtain paper, jute paper, and white linen paper suitable for letters. There are oiled paper and wax paper that can be waterproof and moisture-proof. Rice paper for writing calligraphy, pine paper. Thicker chicken forest paper and moss paper are used to paste windows, make lanterns, paste funeral goods, and even more can be used to make armor.

Dai Wang's improved papermaking technology may have saved the process and reduced material waste, and it was already an advantage in the Central Plains. However, in order to strengthen the protection of intellectual property rights and information, we must not spread this technology to the outside world. If Dai Wang wanted to open a paper mill, first of all, the workers had to be strictly screened, and there was absolutely no need for Persians and Persian-like Sogdians.

Dai Liulang continued: "When I opened a paper mill in Chang'an, I knew that neither whisk nor Dashi, nor India, did not have the technology to make paper. When these distant merchants came to Chang'an, their favorite goods to buy were not only silk and paper, but also fragile porcelain bowls and bottles. We opened a paper mill in Shule City, so that we could sell paper in close proximity and earn more Sasanian gold coins. General, you have money to do what you want. ”

"Okay," Li Siye said, "I support you by providing you with a place and a place to live in a paper mill, and a source of water, including recruiting workers and purchasing materials for production." But you'll have to grant me. ”

"What requirements?"

"Well, the workers can only recruit Han Chinese, not Sogdians or Persians, and second, the craftsmen involved in papermaking cannot operate outside the confines of the four towns of Anxi, let alone approach the sphere of influence of Da Shi. After the start of construction, I will send a few more soldiers to stand guard for you to prevent some foreign forces from coming to steal the division. ”

Dai Wang's head was full of question marks, is Li Siye's statement suspected of overreacting, he just opened a paper mill, can he use such a mysterious mystery as building an imperial mausoleum?

"Okay."

After they made a decision, Li Siye naturally gave his full support, and specially sent people to select a location where there was a waterway in the city, and immediately hired craftsmen to start construction. Dai Wang personally went to supervise the construction of the paper mill, at least the layout should be in line with the process design of the paper mill.

After the completion of the paper mill how to make a profit, not to mention, only the improved papermaking technology introduced to the city of Shule is a happy event, there is a thunder on the left, there is a paper mill on the right, two of the four major inventions have been located in Shule Town, this does not indicate that this will become his prosperous place?

Feng Changqing rushed back from the Green Ridge with the map, the whole person became thin but still energetic, he must have suffered a lot in the place where the iceberg was crisscrossed, and the tall but protruding skeleton could barely carry the bamboo tube behind him.

Li Siye hurriedly went up to help him untie it in person, took out the silk cloth from it, and finally completed the corner of the entire Shule map about the green ridge. Contour lines are used to indicate the relative height of each mountain, as well as rivers, caravanserais, trees, low valleys, and rushing waters. Mountains such as Karakorum Mountain, Hindu Kulun Mountain, Tianshan Southern Vein, Kunlun Mountain and other mountains are like a winding dragon, enclosing this raised flat-roofed house in the center.

In the face of these undulating icebergs, it is of course impossible to turn over directly, and can only go back and forth along the foothills, and then cross the mountain pass, so the straight-line distance is less than 100 miles, and it takes three or four hundred miles more to reach it.

In such a long-distance situation, supply was revealed as the primary problem, which was a problem that Gao Xianzhi would face in the future, and it was also a problem that Li Siye would help him solve.

He rolled up the map, ordered someone to reinstall it on the screen in the hall, stretched out his hand and patted Feng Changqing's skinny shoulders and said, "Don't run out to draw the map again, I will appoint you as the commander of the cavalry battalion, and then give this map to Gao Xianzhi and Fumeng Lingcha to copy in two copies, and let them play the imperial court to crown your loose officials and honorable officers."

Feng Changqing's face did not have such a happy expression, but there was a sense of relief that he had accomplished.

"Thank you, General."

……

The morning in Shule is dry and deserted, and the white air is already swirling in the market, when the morning food vendors are starting to make steamed cakes or hu cakes. Two Tang soldiers wore half-thick cotton jackets, put their hands in their sleeves and walked in the direction of the city gate.

One of them had a notice paper under his arm, and the other of them was carrying a paste stick, and stood still in front of the wall next to the city gate, and pasted the notice on the wall.

After the two soldiers left, the passing vendors surrounded them, with two pieces of paper pasted on them, and the two notices were different contents.

Many of these literate people began to read to the paper: "From now on, the thirteen prefectures in Shule Town will carry out household registration and make a register, and anyone who has lived in Shule Town for more than five years or has the intention of long-term residence can go to the location of the Shule Governor's Mansion to register at the location of the Records of the Military Officer. Registered residents do not need to pay additional fees, but if there are permanent residents who evade registration and engage in all business activities, they will be subject to heavy taxes. The matter is big, and I hope that all the villagers and elders will run to tell each other. ”

Another person recited before the second notice: "From now on, March of each year will become the tree planting month in Shule Town, and all men and women with weak crowns or above the Shule household registration must plant three trees or shrubs on the edge of the Shule Oasis and the Gobi, and they must be able to ensure their survival." It is strictly forbidden to cut down trees within the oasis, all the houses built by the people are made of mud flat-roofed houses, and wooden beams are not allowed, and the flat-roofed houses are also built as far as possible in public houses, and the lantern viewing buildings of temple buildings are not allowed to use bucket arch beams and columns such as the top of the mountain, and stone is used as much as possible. It is forbidden to locate grazing areas on the edge of oases. ”

After listening to this, the onlookers all looked at each other, and several people commented around the notice: "Is this the request of the town envoy of Shule Town, or the request of the Governor's Office, why do you still ask everyone to plant trees if you don't let the people cut down trees and build houses?"

"Maybe Shule Town wants to expand the oasis, but we have too few people in Shule, even if all Shule people plant three trees a year, it won't be much improved."

The discussion was not over yet, and on the other side, several Tang soldiers carried lime buckets and began to paint large characters on the walls of houses or businesses near the street. Although the font is ugly to look at, it is quite presentable.

The servant of a mansion was about to come out to stop him, but when he saw that it was Tang Jun in red who was scribbling, he hurriedly leaned closer and asked, "Master Jun, I don't know why you have to scribble on the wall of my house."

"This is a propaganda slogan, just to let you people see it, anyway, that's what my school captain said, you just make do with it."

The servant looked at these words, he didn't know any of them, and he was afraid that he was going to demolish them, or to behead the prisoners for public display. He hurried back to his master's house.

When the main family ran out of the house, they saw a few big words written on the wall: planting trees, greening the moraine.

(PS: Thank you for the red reward from the desert beacon fire.) ）