Song Jiu stayed at home and tried the test.

What is on that high platform, it's not the main thing, the main thing is on this log, in fact, that high platform, Song Jiu is a little bit of a fool, making a big fuss. Of course, caution is good, and it can be justified.

Begin to repeatedly test the winding method, how to wind the iron chain, this is the most critical step. If you don't go around it well, not only will you not save effort, but it will make the chain stuck.

The eldest sister was not at ease, so she came to Song's house again before buying vegetables.

"Eldest sister, you come with me."

Song Jiu took the eldest sister to the East Water Gate, which is a majestic city gate built on the Bianshui River, two tall urn cities on the left and one on the right, each with a corner gate, and then erected a building on the flat bridge, using an iron window gate as a gate, that is, an iron fence, which was put down at night. However, the commercial atmosphere is favorable, and the ships on the Bianshui are constantly coming and going, and it is not a critical time, unless it is a special situation, this iron fence is rarely put down.

Out of the corner gate, after the dragon river, is the sandbar outside the city, the length is similar to the length of the city in the city, but more open than the sandbar in the city, in fact, with the dragon river separated, this giant sandbar is equivalent to divided into two.

The city of Tokyo began to prosper, but certainly not as much as later.

There are more and more people in the city, but there are not many people living on this sandbar, most of them grow some vegetables and grains, and there are many reeds growing on the bank of the Bianshui, which have just sent out green leaves, half green and half yellow, and the river wind blows, rattling.

Song Jiu said: "Eldest sister, rely on the mountains to eat the mountains, rely on the water to eat the water, this river is the Golden River." ”

"So what?" The eldest sister is inexplicable.

It is good to rely on the water draft, and almost half of the people in the river rely on this water to make a living. But it can't be said how good it is, the Yellow River has a lot of sediment, the water level rises, and in the summer and autumn flood season, the water is also lifted, so desperately the Biandi is heightened and reinforced.

In the summer and autumn, the neighborhood will also be divided into manpower patrols.

There are advantages and disadvantages, why not say it so affectionately.

Song Jiu turned his head and glanced at the city wall behind him, although it was a water gate, the defense strength was not low, and there were many horse faces and war sheds on it.

"Eldest sister, where does my supply come from?"

"Xiao Jiu, why did you think of asking this?"

"This is a key health, my supply mainly comes from Shandong, Henan, Hebei, Guanzhong, Henan's supply is mostly from Cai Shui, so the saint ascended the throne, immediately hit Jun Tong Cai Shui, the second year regardless of the country's turmoil in the autumn, and sent tens of thousands of people Jun Tong Cai Shui, straight to Yingchuan. This year, he asked the minister to lead thousands of people to dig a canal to divert water and merge the Min water, so that the supply of most areas in Henan can be transported to the Huimin River through Cai Shui. The supply of Shandong is the Wuzhang River, the second year of the Shengshang's accession to the throne because of the mud and silt of the Wuzhang River, which is not conducive to boating, sent people to dredge, and repaired it in the third year. The Jinshui River is related to Luoyang and Guanzhong, and in the second year of his accession to the throne, he also sent people to dig a canal to lead the water from Beijing to Beijing. But what about Huainan and Jinghu? ”

"Where did you get the money from those two places?"

"Eldest sister, it's good, the imperial court has newly acquired Jinghu and Hunan, but where is Li Chuyun killing people and eating human flesh, forcing the army and the people to rebel, the imperial court is appeased, and it is too late to compensate, so don't mention taxes. Huainan first started the week before last, to our dynasty, and the Southern Tang Dynasty stalemate, Li Chongjin rebelled in Yangzhou, the two Huai people were sandwiched in the middle, and the people were not able to make a living, how much tax could be collected? Therefore, Bianshui seems to be less important than Wuzhang River and Cai Shui at the moment, only a little better than Jinshui River. But what about the future? ”

"Xiao Jiu, I'm a woman, I don't understand what you're saying."

"Eldest sister, what I'm talking about is that this river will be a golden river in the future, right now here is a vegetable garden, a wasteland, a reed bush, a wild willow forest, and in the future this will be a place full of gold and gems.

The reason why Song Jiu said this is a painting, a very famous painting, "Qingming Riverside Picture".

Where did this painting come from, it is the downstream of the confluence of the main Bianshui and the tributaries, where it is a little far away from the capital, so it is not too densely populated at the end of the Northern Song Dynasty, and then to the Hongqiao at the confluence, and now it has not come out, and then to the east of the water gate, the city has nothing to do with the river, the painting is the situation of the north of the East Water Gate River, so I don't know what the East Water Gate River looks like after one hundred and twenty years. But I don't think it's any worse than it is now.

"Xiao Jiu, I still don't understand the eldest sister."

"Eldest sister, I'm just talking about it, it's just an idea for the time being. That family thing is the first pot of gold. ”

The eldest sister still didn't understand, but she could only hear that this younger brother seemed to have great ambitions.

On the third day, Song Jiu was still debugging at home.

A distinguished guest came, Kaifeng Judge Liu Ling. It can't be regarded as a top minister in the temple, but in Song Jiu's eyes, Liu Ling is not a small official.

Put down the chalk in his hand, debugging can not be blindly debugged, but also use the formula to calculate, in fact, a lot of him has forgotten, fortunately he did a few years of tutoring in college in his previous life, which is equivalent to a few years of junior high school to high school books all reviewed again, and later into the society, a child from my uncle's family went to school, and often came to ask for advice, which is equivalent to three times of review, so to the Song Dynasty, I still remember a lot. As for the knowledge in the university, it is basically handed back to the various tutors.

But it's enough to deal with it.

It was very uncomfortable to use a brush and wanted to make a pencil, but a pencil lead stumped him, and he made a quill pen, which was dripping ink, so he made a blackboard out of ink and chalk out of lime.

Song Jiu was not surprised by Liu Ling's arrival.

In the previous life, some people said that the Song Dynasty was bad, weak, and hateful, and some people said that the Song Dynasty was good, rich, and focused on internal governance of the people's livelihood. It's all a story on paper. Came to the Song Dynasty, wanted to find a way, asked a few big rivers about the matter, Zhao Kuangyin imperial robe, there are many generals around the country are not satisfied, and there are the Southern Tang Dynasty, the Northern Han Dynasty and the Khitan difficulties, that's it, Zhao Kuangyin also wantonly managed water conservancy, at this time the Bianshui harm is not big, Zhao Kuangyin keenly edicted, let the governors of the states and counties along the Bianhe River, to the spring to teach the people to plant elm willow on the shore to strengthen the embankment. A glimpse of the leopard in the tube.

In the Song Dynasty, the two taxes mostly walked on the water, one carried up and down, how much labor had to be used in a year, and Zhao Kuangyi may not have thought of it at the time, but he would definitely care about it afterwards.

Song Jiu doesn't care.

Even if you want to learn, it's not easy.

Judge Liu came in, and when he looked at the house, he was stunned on the spot.

Chalk blackboards were easy to make, but he had never looked at them. This is not the reason why he was stunned, Song Jiu's calculation formula remained the same as before, and he still used English letters and Arabic numerals. Liu Ling was also a learned person, and later he joined forces with Zhu Dong to get out of Yuelu Academy. But when has he ever seen such a calculation formula?

"Jiulang-kun, you are ......"

"Report to the judges, and the subjects use it to calculate."

"Calculations?"

Song Jiu explained 1234567890, and explained the code names such as friction, tension, length, number of rope strands, and forward distance.

"Judge Liu, it's more convenient to use this code name to calculate." It is not said that these two symbols are from the West, only that it is a code name.

"What kind of pen is this?"

"In the same way, it is still convenient, slow to use a brush, and then make a stroke of lime and paint it on this blackboard, which is fast to write and cost-saving, and you don't need to use a eraser to wipe it."

"This is good...... Liu Ling's eyes lit up.

Pen, ink, paper, and inkstone are expensive in this era, as the pine trees in many areas are cut down, the ink is getting more and more expensive, and the paper is better in the future. There are many poor children in the family who draw on the sand with sticks in order to write, just like Ouyang Xiu.

Liu Ling has a good time, there is no time to take a look, just with this chalk, it is worth this trip.

In fact, there are many things worth running, such as this formula, that big screw and wrench, but unfortunately this is beyond his understanding.

"Judge Liu, although the brush is the real pen, if it can be promoted, it will allow more children from poor families to read. If you're interested, I'll pass it on to you how it's made. ”

"Okay, can you tell me how this thing is pulled?"

"It can be measured by formulas, but the friction parameters are not very easy to calculate. But the pulling force can be predicted, two people pull, half a stone force ......"

A Song stone is equivalent to more than 100 catties, the two of them must have more than half a stone, two stones and three stones with great strength, but this is not a quarter of an hour, but a whole day to pull, can only be regarded as half a stone, it is too much, if it can't be pulled, the goods fall down all of a sudden, it will be several tons of goods, smashed on people, people can be crushed into ashes, smashed on the ship, small ships can only be smashed alive and sunk.

"The subjects have calculated, only this arm shaft, with two and a half stone force to pull, if well designed, its maximum estimate is more than 600 stones, can not be pulled like this, the goods are lifted too heavy, the net rope, the shaft, the iron chain may not be able to bear, and the more labor-saving, the longer the distance, so save effort, but waste time. Therefore, the subjects put its estimate at 200 to 100 stones, and with the consumption of friction, the actual weight that can be pulled up is between 50 and 100 stones. But if you want to be safe, it's better to have fifty stones. You see, there are many hooks designed on this hinge, and the position of the crane is different, and the weight of the lifting is also different, the heavier the longer it takes, and the lighter the shorter the time. ”

Song Jiu erased the blackboard with a eraser and wrote the formula with chalk.

However, it was obvious that he was playing the piano to the cow, and Liu Ling was also stunned again, which made Song Jiuyi stunned by a series of numbers, and asked: "Can the two of them pull up six hundred stone objects?" ”

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