"Knock Knock ......"

A team of dozens of wagons and hundreds of horseback teams traveled east along Zhangshui, on the border between Cangzhou and Youzhou. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

In the first month, it is the sowing season for the people of Hebei.

In the fields along the banks of the river, farmers drive their oxen to plough the flat square fields, and elderly children and family women help in the fields.

When this extraordinarily dressed procession passed, it really attracted the common people in the field who had never seen much of the world, and one by one they bracked up their tired waists to watch the carriages and horses passing in front of them, and marveled at the extraordinarily decorated carriages.

"Mother, why do those carriages have four wheels?" Children who had never seen a horse-drawn carriage before asked their mothers.

But their mothers had lived for decades and had never seen each other, nor had they heard of them from their elders or distant neighbors, so they had to smile and fool at their children: "Maybe those nobles don't think the two-wheeled carriage is good-looking, so they installed it on four wheels." ”

The villagers looked curiously at this extraordinarily dressed carriage and horse procession, thinking that this was the family of a wealthy family in the city who had come to the countryside to play.

Li Yu also looked at the villagers who were busy in the fields with great curiosity, looking at their clothes, both men and women, old and young were patched, and the children's faces were also waxy.

After all, this is not the Bohai Economic Circle more than 1,300 years later, and unlike the southeast coast, which is rich in products and has a large number of high-quality seaports, it can develop overseas trade.

The coastal areas of the north represent the poor countryside, and there is no county in a radius of hundreds of miles, and only the countryside can be seen.

You know, this is the Tianjin of the future!

In later generations, Tianjin, the gateway to Beijing and Tianjin, can now only find a village living along the river, and the Haihe River that flows through Tianjin is now called Zhangshui.

There is no bustling port of Tianjin, only at the mouth of the sea stands a newly built Yanwangfu Youzhou shipyard in the past three years.

Yang Shiyan sat in the carriage and fell asleep, she had loved this kind of carriage since it was built. It's not as bumpy as those two-wheeled carriages, and it's a must-have for getting out and enjoying the road.

In order to have a stable life on the road in the future, Yang Shiyan found Li Yu to stalk and stubbornly made a car for himself without spending a penny. In this winter, sitting in a comfortable carriage and waking up comfortably, you may be at your destination. There is no longer the unstoppable torment of the road before.

"Sister Shiyan is awake!"

Li Cailing shook Yang Shiyan's arm and said.

Out of curiosity about the distant Anton, Li Cailing, who didn't want to be too restrained at home, persuaded her best friend Yang Shiyan to take her into a carriage and mix it in Li Yu's convoy back to Anton when she left Chang'an. It wasn't until he boarded the Weihe River boat and entered the Yellow River that Li Yu found that there was such a little girl in the team.

In the end, under Li Cailing's pitiful eyes, Yang Shiyan said good things on the side, and Li Yu had to agree to take her.

"What?" Yang Shiyan rubbed her sleepy eyes and said loosely.

"Didn't Si Yang return to Youzhou first, stay for a few days, and then go to Andong via Liaoxi? Why did you drive east along Zhangshui? This is going east to the sea! Li Cailing asked suspiciously.

Yang Shiyan opened the curtain and looked at it, there was really a big river outside the window, quite lazy turned his head and covered his mink cloak and fell asleep, and there was a buzzing voice from the mink coat: "Si Yan should go to see his Youzhou shipyard at the mouth of the Zhanghe River, and the end of this river is enough for him to be in love." ”

"Oh!" Li Cailing pouted and looked out the window, complaining in her heart that Sister Shiyan knew how to sleep, how boring it was to sit in the carriage alone, and she didn't accompany me.

Li Yu could have returned to Andong on the route he had taken to Chang'an last year, but considering that Youzhou was still under the supervision of most of Youzhou, he didn't go back to see it. He decided to spare Youzhou, inspect the situation in Youzhou, and then return to Pyongyang.

It's just that after entering the boundary of Cangzhou, Li Yu suddenly thought of a name introduced by the geography of the middle school in his previous life - Changlu Salt Farm.

Changlu Salt Farm is the largest salt farm in country Z in later generations, and its output is about a quarter of the total output of sea salt in ** country, which is amazing.

Li Yu suddenly found that he had been busy in the past few years, and had forgotten about the big killing weapon of Haiyan, and only built a small shipyard on the edge of the Changlu Salt Farm in later generations, which was really a tyrannical thing!

Annoyed, Li Yu turned around and went straight to the Youzhou shipyard, and a letter summoned Cui Xuan, who rushed back to Youzhou to preside over business.

When the team arrived at the Youzhou Shipyard and the owner arranged a resting place, Cui Xuan also arrived.

Li Yu hurriedly summoned him to discuss building a salt drying workshop on the sea side next to the Youzhou shipyard.

There were three sources of salt in the Tang Dynasty, well salt, pond salt, and sea salt. In addition to the pool salt can be taken directly from the salt pond without decoction, such as Hedong salt, well salt, sea salt need to be cooked in an iron pot.

There are only a few salt ponds in Datang, and the output cannot be supplied to the needs of tens of millions of people.

In response to this, the source of salt supply in Datang has formed a pattern of pond salt in the northwest, well salt in the southwest, and sea salt in Shandong, Jiangnan and Lingnan.

Most of the population of the Tang Dynasty is concentrated in Shandong and Jiangnan, and if Li Yu develops the salt drying method in the salt fields and produces a large amount of cheap sea salt, I am afraid that even the pond salt and well salt in the northwest and southwest will be affected.

In his previous life, Li Yu also read a lot of time-traveling novels, which protagonist didn't engage in salt drying method on the beach before the Qing Dynasty, and as soon as the salt was exposed, he made money every day.

From holding money, money, food, and soldiers, he began to embark on the great journey of dominating the world and dominating the world, no, unifying the world.

YY is too much, it is unrealistic to dominate the world, Li Yu shook his head and smiled.

Although the earth is not big, it is still not small for human beings who have not entered the modern scientific and technological civilization, and it is simply a fool's dream to unify the world.

For this reason, Li Yu had to stretch out a middle finger to those novel authors across more than 1,300 years of time and space: You are cool, you are so fucking cool, you look too damn cool and have a hairy meaning.

Li Yu mentioned the idea of preparing to dry sea salt to Cui Xuan.

Cui Xuan didn't have an opinion, but the second monk touched his head and asked inexplicably, "How did you dry this sea salt?" ”

"How? Let me think! ”

Li Yu was also a little confused, and his mind remembered to dry salt for a while, but the specific way to do it was just a reflection.

"This salt pan seems to be the whole tidal flat by the sea first, divided into square fields that are salt pans, and then the sea is not introduced into the salt pans, after the wind and sun, the water evaporates, and the sea salt is left in the salt pans!"

Li Yu happily preached to Cui Xuan about the salt pan salt drying method that he remembered.

Although Cui Xuan was a little surprised how Li Yu came up with the idea of directly drying the sea water to get salt, he immediately thought of the key question, "Can you eat the salt that is dried like this?" ”

"Oh? I can't seem to eat it yet. Li Yu said a little embarrassed.

The salt that comes out of the sea is not just salt that can be eaten, there are many kinds of salt in it, which can eat the dead, and it must be table salt - pure sodium chloride crystals.

"It seems that there is still a need to make brine, and this process seems to be to dry the seawater in one salt pan for a day or two, and then transfer it to another salt pan, and then transfer several salt pans in turn, and the brine seems to be ready."

Li Yu churned in his brain and said uncertainly, hoping that the salt drying method he read in his previous life was not wrong, otherwise it would be too embarrassing!

Cui Xuan was full of black lines in his head, and said in his heart: What do you mean? Your Highness, can you be sure?

"By the way, there's another crystallization step."

Li Yu was overjoyed, and secretly congratulated himself that he had taken another step.

"Your Highness, let's still use the old method, how about recruiting a few masters who make sea salt to test His Highness's method and groping for the doorway?"

Cui Xuan had to smile and propose this stupid method of experimenting to test the truth, just like Li Yu said domineeringly to the craftsmen who were caught in technical problems a few years ago: If a few skilled craftsmen can't do it, then recruit ten, and if ten can't do it, recruit hundreds and thousands; If it doesn't work in one year, it will be two years......

Li Yu patted Cui Xuan's shoulder with great appreciation and said: "This method is good, it is worthy of this king to hand over the industry to you to take care of, and quickly organize people to get the salt pan out of the salt pan and strive for salt as soon as possible." ”

"Please wait for the good news of Your Highness......"

Ten days later, he took a group of salt workers back to Youzhou Shipyard to survey the location of the salt pan, and finally selected a large tidal flat on the north bank of the Youzhou Shipyard, and sorted out the salt pan test to explore Li Yu's salt drying method.

Maybe the history is so coincidental, Cui Xuan and others chose exactly the location of the Changlu Salt Field more than a thousand years later.

When Li Yu was reported to be named, Li Yu directly used the word Changlu in later generations, and Changlu Salt Mill was born.