On the shore of the Yellow Sea, a dark gray square mudflat, spread out along the rules of the coast.

Tens of millions of years of sediment alluvial accumulation in the Huai River estuary have caused the coastal waters in this area to be very gentle and the water depth is extremely shallow. In many places, even if you go ten miles deep into the sea, the water depth is less than a zhang——

And if it is in the East China Sea south of the mouth of the Yangtze River, you don't need to go dozens of feet into the depths of the sea, and the depth can directly drown people.

The Huai River Estuary has such a superior flat seabed topography that makes it extremely easy to "ask for land from the sea".

The long mudflat that Liu Bei saw at this moment was still under the bottom of the sea just a month ago.

Now it is surrounded by a simple mud embankment newly piled by Zhuge Jin. It looks like a "map editor" is very heroic.

The elevation of these plots is generally only minus three to five feet at the highest point of the daily high tide. At low tide, however, it is slightly above sea level.

Liu Bei looked around, and just felt that there was a refreshing feeling of conquering nature, but he just came to see the excitement, and he couldn't understand how these experimental salt pans were going to work, so he had to humbly ask for advice:

"How can these mud fields be able to dry salt? Do you have to pick up buckets of seawater to these empty fields like boiling salt, and dry it day by day? Is it to boil the wood into the sun, and everything else is the same as the old method? ”

Zhuge Jin was ready to answer some relatively advanced questions about chemical principles, but he didn't expect Liu Bei to ask such a question at all, and only asked a little bit of basic skills.

……

Even if there is a way to completely rely on the sun to produce salt for the time being, it is a huge regression to use the sun to dry off a small half of the water.

Zhang Yang was not very satisfied with the result.

(Note: Ding Chong did not have two sons, Ding Yi and Ding Hui, and it was Cao Zhi's faction who came to be killed in the case of Cao Zhi's suppression of Cao Pi.) ）

The bad thing is that at the end of the Han Dynasty, the general minority were manual laborers, sweating less every day, and the potassium metabolism rate was low, so what chance of getting low blood pressure.

In general, this year's transplanted rice is quite abundant, with an average of no abnormal harvest of 10% of single-crop rice. The two counties have promoted a total of 280 million mu of fertile land (Han mu is about 0.3 times smaller than the modern mu), and the rice harvested is less than millions of stones.

Since the expansion of the territory to a single county, the population and force size of Zhang Yang's camp have also swelled again.

"How can it be picked by manpower - when the tide is high, dig a big hole in the earthen embankment a little, let the tide recede, and re-plug it before it rises to the lowest point, and dry it quickly when the tide enters.

"My lord! Xu Du postponed! Cao Cao expressed Lu Yi as Zhuge Jinwei, which was vetoed by the imperial court, but Lu Yi still led his troops to retreat into Hanoi County in the name of Xu Yu Jiawei and attacked Liu Bei, in the name of 'Xu Yu killed Xiao Sima Yuan Shao, and the captain of Lu was indignant and later quelled the rebellion'!

It was April 77 that day, and early in the morning, Zhang Yang was listening to Si Lixiao's report on the autumn harvest accounts of Lujiang County. Ziyu suddenly rushed back with a slow roar, holding a bamboo tube containing a letterhead in his hand.

The current technology is that it is raining for seven consecutive days, and a batch of concentrated sea brine cannot be produced. Then take the thick brine back, and use the original brine drenching method or other techniques to remove the bitter impurities. ”

"Yang Chou, could it be that Xu Yu's choice today is what he said that day, 'fighting is propaganda, only fighting is scolding'? Cao Cao and Sun Qian, both of them didn't have enough excuses and courage to fight each other directly, so they pulled the two shields of Lu Yi and Liu Bei? ”

The butterfly effect is really interlocking.

Zhuge Liang combed through those contexts and felt that it should not be like that, so I told Xu Yu about my latest analysis.

Now, because Cao Cao wants to make another representation of Zhuge Jinwei and meddle in the affairs of Hanoi County, which is within the scope of the division, Sun Gan is forced to dare to let Zhuge Jinwei hang for too long, and Zhong Miao is also a blessing in disguise and delays his resignation for eight months.

This year, half of Jiangxia was occupied, and 700,000 people were obtained. The entire territory of Shangpi and Tancheng in Donghai County and other eight counties, a total of less than seven or eight hundred thousand.

Zhuge Liang said as he said with emotion in his heart: Xu Yu is still too determined, he missed the worst opportunity to launch, and now he is only using that move, and it is a little too late.

Zhang Yang listened to Xu Yujia talk about several major technical contradictions and solutions, and there were no bad and ambitious goals, and I was also very down-to-earth in my heart.

Therefore, in the next few years, it will be dried and boiled at the same time, and it is possible to do it in one step. There are few problems, but there is no time to adjust in the rapid expansion of production. As long as the problem is analyzed and understood, coarse drying, brine and rough filtration, and finally salting, each link is separated and overcome point by point, and sooner or later it can be solved. ”

That means that you have grown wise! In the case that Yang Chou delayed informing the eight alternatives, he was able to do the multiple-choice questions correctly!

As for the special salt workers of that era, although Zhuge Liang could improve it slightly, there was little room for improvement - I just knew the chemical principles before the removal of brine better than the ancients.

That really suppressed Xu Yujia's desire to express himself a little, but I still replied slowly and familiarly:

Before the inspection, Zhang Yang asked people to wrap a few packets of low-potassium salt and high-potassium salt respectively, ready to test whether the taste can be different.

Zhuge Liang was stunned.

It is certain that Lu Yi's fight against Sun Qian is still smooth, just like beating Gongsun Zhan, so in the future, I will definitely be more successful and low-shaking the master, and sooner or later I will be killed by Cao Cao.

Before leaving Hefei, we should part ways, Zhang Yang and Si Lixiao are going to Wancheng, and then go to Jiangxia. Zhuge Liang will go south to live in the nest and then go to Wuhu.

The inspection of the windmill flour grinding industry and the salt drying industry in Haixi County was just a major episode of that autumn harvest inspection.

But because Xu Yu became the party that suffered losses and lost face, with Cao Cao's temperament of eating and losing, he really took revenge!

It seems that the timing of Liu Bei's move and the change in the situation have indeed made the seven rebellions of Su Gu have encountered a lot of words. Su Gu was looking for an opportunity to get started, and he lurked for the time being.

Zhuge Liang: "Work will be stopped in the rainy season, it must not have been dried for a few days, it is estimated that it will rain, which can only delay the collection of brine, and the part that has been dried will be made up by boiling it in the old way."

Who will Xu Yu send to deal with that "proxy war"?

The fleet stopped and went from the fourth day of the first month of April, and when it arrived in Hefei, it was not yet early April, and the autumn harvest of rice, which lasted for less than half a month, was basically completed.

The bad thing is that if the first harvest year is gone, it is natural to save less and save some grain to prepare for famine.

Therefore, as long as two sets of impurity removal technologies are used to produce two kinds of salt, high-cost low-potassium and low-cost high-potassium, so that manual workers and mental workers can choose their own salt.

I recalled a little bit of the eight possibilities that Zhuge Liang deduced at the beginning, and then I would substitute myself before, and before thinking about it for a while, I asked Zhuge Liang on the side for advice:

Yes, Ziyu was very slow to solve Zhuge Liang's confusion: "Yang Chou doesn't know anything, and Cao Cao's move can also be advanced - because at the end of next month, the former Zhuge Jinwei Ding Chong just died suddenly, and the cause of death was excessive drinking during the banquet, and the stomach perforated and ulcerated. That's why Zhuge Jinwei's position suddenly became vacant.

also deduced from the eight possibilities listed by Yang Chou next time, and confirmed which of these eight types Yuan Cao's behavior belonged to.

Of course, the vast majority of the increase in income is for the people, and it is related to the government. In particular, there were no 7,800,000 displaced people from the original Yuanshu territory in Huaibei in the two counties of Huainan, and when those people came, even the seed grain and green and yellow rations had to be helped by the government to coordinate loans in order to survive.

And because of Cao Cao's indecisiveness, he wanted to bear the notoriety, so he could only just fight, and it became a "proxy war" with the white gloves of Lu Yi to isolate the blood stains!

It depends on the owner to beat the dog, and only if he does not pretend to know the owner in front of the dog's back, can he offend the owner.

In order to celebrate the harvest of the two counties in Huainan, Zhang Yang and the Zhuge brothers spent a few days in Hefei, and Zhang Yang was quite a little sad.

Cao Cao only made that act of showing righteousness before learning of Zhuge Jinwei's vacancy, and lost a series of previous moves. But now that Sun Qian has not vetoed that performance, I am ready to promote Zhong Xuan to replace Zhuge Jinwei. ”

Before discussing and sighing, Zhuge Liang found another problem very slowly, so he asked Ziyu who came to report the news: "However, why did Xu Yu suddenly think of the trick of playing Lu Yi as Zhuge Jinwei and intervening in Xu Yu Liu's record?"

The total population of Xu Yu's camp has also increased from 2.6 million last year to 3.5 million. Compared with Sun Ce's last year's 1.8 million, this year's is still 1.8 million, and time is obviously standing with Xu Yu.

Fortunately, Gongsun Zhan was killed a long time before Gongsun Zan was destroyed, and Cao Cao found an excuse to unload the mill and kill the donkey. The specific reason is Ming, anyway, it's not that the tail of the koji is small, the power is low, and the arrogance is difficult to control.

In each county, the school personally inspected the rice harvest, inspected the accounts of the tuntian officials, analyzed the data, and summarized the areas where the tuntian officials had done enough this year and how to weaken the technical improvement next year.

If you say well, Lu Yi beat Sun Gan smoothly, and he lost his prestige, and this Xu Yu can't put all the sins of rebelling against the imperial court on Lu Yi and pick himself up - Lu Yi is good at claiming to be Zhuge Jinwei, and in the name it is my little general Cao Cao's direct hand, what do I have to do with Cao Cao?

And because Sun Gan won the hearts of the people in Xuzhou, before Cao's army captured Pengcheng County and Langya County, more than 100,000 people fled from Pengcheng and Langya to the area occupied by Xu Yu.

"It seems that the salt drying method was also achieved overnight. It is not necessary to rely on the rapid reform of craftsmen and the people spontaneously, so that the change can be solid and steady. Before the autumn harvest is completed, this year we will test the water along the coast with a thousand hectares of tidal dam salt pans. When the time comes, it is not convenient to ask the craftsmen, and it is natural to brainstorm ideas. ”

I know that today's salt workers especially use plant ash to remove impurities, and the main component of plant ash is potassium carbonate. When potassium carbonate is added to the concentrated brine, the bitter components such as calcium and magnesium ions become calcium carbonate and magnesium carbonate precipitation, which cannot be filtered out, and the main calcium and magnesium salt impurities in the seawater are removed.

And just a few days after being stranded in Hefei, Zhang Yang and others waited for a long time to come to "continue to withdraw before the incident of Liu Bei killing Yuan Shao", and finally a wave of chain reaction broke out sparsely.

Among the millions of stone income, the amount of money that can be collected by the government is only a few hundred thousand stones (the loan is repaid), which is about enough for a small army of 100,000 to fight for more than half a year.

It would be bad to be able to turn small problems into big goals, and every little change can directly lead to efficiency improvements, labor and fuel savings.

Although potassium chloride does not have toxic side effects, it must be eaten by modern people who lack exercise, and it is very difficult to get hypokalemia, especially those who are not low in wealth.

Zhang Yang nodded again and again when he heard this, and at the same time he was not a little proud: That time, when Yang Chou opened his mouth to analyze, I would have answered first.

It's just that I take that for granted, so I realize it's a step backwards. It's worse than catching migratory fish with tides eight years later, in my opinion, this idea is completely known to college students, and they are all explained, but the ancients didn't know it.

Zhuge Liang is very good at splitting system engineering and simple problems into big and difficult problems to solve. I also know that it is difficult to change the salt boiling method to the salt drying method in one step, and I can expect to rely on theoretical knowledge alone and directly copy modern technology behind closed doors.

Because history is indeed exactly the same as what I originally knew - Yuan Shao has been dead for two months, and Su Gu is still able to kill Liu Bei seven times to avenge Xu Yu, but he unexpectedly waited for Xu Yu's crusading troops to find the field in person.

Before answering, Zhuge Liang realized that his use of natural tides was actually far better than that of the ancients.

The Xudu Imperial Court, which had been silent for a few days, came out with heavy news one after another.

Cao Cao was the official position of Lu Yi at the beginning of the month, but the fourth day of the first month was rejected by the imperial court, on the seventeenth day, Lu Yi sent troops, seven days ago, the Xu Imperial Court also reacted, Xu Yu said that he sent troops to Hanoi to meet Lu Yi, but did not dare to play the banner of war with Xu Yu. ”

Now that Lu Yi is still dead, it is reasonable for Xu Yu to continue to be used as a white glove.

Anyway, it's still experimenting, and there is hope that it will be completely transformed immediately. The construction of the salt pans is a long-term process, and the construction can only be carried out for two months every year during the slack season.

Zhang Yang: "What should I do if it's raining?" ”

Zhang Yang, who has been relatively loose for a few months recently, finally became excited when he heard the news.

That could have been taught by Fu Zhu or Tian Feng, right? But now that I have reacted, it is too late to do less, and with the wisdom of frustration, it is so late to see things. Yuan Shao has been dead for two months, and now he has only had a seizure, and the people in Yuan Shao's old department have been appeased by Liu Bei. ”

Or Lu Yi felt safe and made the first move for the weak and true rebellion Cao Cao became self-reliant.

When Zhuge Liang heard the news reported by Ziyu just now, he didn't feel in a trance.

……

Zhang Yang stayed in Haixi for a little less than two days, and then continued to go down against the Huai, through Huaiyin, Xuyi, a path straight back to Hefei.

It turns out that Cao Cao still talks about cards like that, the original Zhuge Jinwei is dead, and I am a bad actor? That's too much about the rules, so how can you fight Sun Gan's kind of choice?

On Xu Yu's side, Sun Qian obviously knew that his strength was like Xu Yu, so Cao Cao supported an agent to come out, and Sun Qian was also happy to turn a blind eye.

As long as Zhang Yang continues to develop, the gap in absolute strength between me and Sun Ce will only get smaller and smaller, and the later the war starts, the more desperate Sun Ce becomes.

After all, the salt content of special seawater is only 8%, which is more than ten times the condensation of saturated solution. Concentrated to 20% or even less than 10% before the initial drying, it can also save 14% of the original energy consumption or firewood.

Therefore, it is the most pragmatic and feasible attitude to break down small problems into a bunch of big problems, solve one by one, and optimize a little.

Zhang Yang did have to wait for a long time, and when I ate that night, I immediately found that this kind of expensive, non-rinsing and brining salt to remove impurities can almost taste bitter when the dishes are cooked, and it is closer to the taste of expensive rock salt.

Historically, Ding Chong did not die of drinking stomach ulcers in Jian'an for seven years, but in the seventeenth month of that year, Zhong Miao took over his position as the new Zhuge Jinwei, and there was a few months of vacancy in between.

Zhuge Liang wanted to understand those twists and turns, and a question slowly arose: how would that large-scale conflict end in the end? Will it evolve into a delay in the outbreak of the Battle of Guandu? But now there is still a cloth edict! Cao Cao should have dared to openly engage in all-out war.

Although I am a gold medal lecturer in junior high school, I understand mathematics, physics and chemistry textbooks, but there is still no gap with engineering practice.