The Great Song Dynasty had a heavenly prison, and the Great Yuan set up the corresponding Taishi Academy. The Taishi Academy belongs to the secretary province. There are 7 Taishi Commanders, who are in charge of astronomical almanac. Under the Taishi Academy, there is a special Calendar Printing Bureau, which is dedicated to printing annual almanacs. The number of seasons is related to the auspiciousness of agricultural politics, and it is regarded as a major event if you are obediently respectful.

At this time, the head of the Taishi Academy was Guo Shoujing, a water conservancy expert, and Hao Ren was going to the local government to supervise the affairs of the government soldiers, and before leaving, he came here to care for Yang Dacheng, who escaped from the Great Song Dynasty with him. Because a large part of Yang Dacheng's knowledge is related to astronomy, Hao Ren sent him to the Taishi Academy, but he didn't expect that after Yang Dacheng left, he would beat a dog like a meat bun, and just wrote a letter saying that he was lecturing to the people in the Taishi Academy.

Since the Taishi Academy attaches so much importance to Yang Dacheng, Hao Ren doesn't want Yang Dacheng to run to Wanhu Mansion when he goes out. Because his wife was abducted, Hao Ren was more concerned about his wife's contact with Nanban.

After entering the Taishi Academy, I learned that Yang Dacheng was lecturing after asking. This made Hao Ren very surprised. The Taishi Academy gathered the most knowledgeable people in Dayuan, Yang Dacheng looked at his appearance, let alone had a reputation, but he didn't expect to be able to give lectures to the learned people of Dayuan, and he had been lecturing for so long.

Ten thousand households came, and Guo Shoujing Taishi personally came to meet. Hao Ren said: "I'm going out for a few months, if the Taishi Academy thinks that Yang Dacheng is available, it's better to let him stay in the Taishi Academy for a few months." ”

“…… It's okay, my Taishi Yuan doesn't lack a bite of food for this person. But if Wanhu comes back, do you want Yang Dacheng to go back to Wanhu Mansion? ”

"......" Hao Ren was confused by Guo Shoujing's straightforwardness, and he hesitated for a moment before replying: "This person is of no use to me, if Guo Taishi wants to use him, he will hand it over to Guo Taishi." But is this talent really so good? ”

"This talent is also average, but he has learned a lot of things in the Song Kingdom. The way Song taught people is so strange, too many things are actually made by rote memorization and devouring dates. Although this Yang Dacheng is reasonable, he is not clear at all. In addition, there are so many things that I have forgotten, I can only leave him to ask slowly. ”

Thinking of sewing tools and farm tools, Hao Ren sighed: "It's difficult that the astronomy of the Song Kingdom is so good? ”

"It can be the law of eternity." Guo Shoujing replied very refreshingly. In the past, the Chinese astronomical calendar used various empirical patterns. These patterns are becoming more and more useful after being adjusted in practice, but they are empirical patterns after all.

The astronomical theory of the Great Song Dynasty started from the ground and established the system concepts of the universe, the Milky Way, the solar system, and the earth-moon system. These basic ideas were a thousand years ahead of Dayuan. Once the concept of latitude and longitude is determined, there is an accurate system of calculations for the precise location of any point on the earth.

Although Yang Dacheng is a swallowing of dates, coupled with the lack of memory, the content of the narration is unknown in many places. Experts like Guo Shoujing looked at the globe, and after listening to the narration, they felt that they suddenly opened up and suddenly became enlightened.

Hao Ren just wanted to solve the problem, and when he saw that Guo Shoujing was willing to take on the trouble of Yang Dacheng, he stopped talking about it. "Guo Taishi, I want to ask something, at present, all the south of the Yellow River is owned by the Song Kingdom, can Guo Taishi still persuade His Majesty to build various canals?"

"If it's my intention, of course it's to be repaired. It's just that many people in the court are worried that the canal will be used by the Song State, and even His Majesty is very jealous. ”

"Can't you build a new canal in the next few years?"

"Yes."

"Can the capital city build a water canal?"

"Aqueducts? Oh, it's the one in Song Kingdom, right? ”

"Yes."

"I heard that Wanhu brought back the drawings, when will they show me."

"I don't have it with me now, but I'll send someone to deliver it when I get back. But the matter of the canal, will it not be repaired again? ”

Guo Shoujing saw that Hao Ren was quite persistent, so he asked with a straight face: "Why did Wanhu ask about this?" ”

"Soldiers need to know the geography, and there is a big difference between whether there is a canal or not. Since there will be no new canal in the next few years, I will train my troops along the route of not having a new canal. Guo Taishi, this is goodbye. ”

“…… Wanhu has a safe journey. ”

Leaving Guo Shoujing's place, Hao Ren Wanhu resisted the urge to turn back. He initially wanted to ask Guo Shoujing why he opposed the construction of tap water, but after listening to the beginning, Hao Ren stopped asking. Guo Shoujing's opposition is just a reason and excuse for the Great Khan, and as for whether Guo Shoujing is really opposed, Hao Ren will no longer simply believe the words of Kublai Khan.

On the way home, Hao Ren thought about it repeatedly. Judging from Guo Shoujing's evaluation of the new canal, it was Kublai Khan's idea to stop building a large number of buildings, not Guo Shoujing's own idea.

Recalling a few years ago, when Dayuan had a smooth journey, it was really a big construction, and it meant prosperity everywhere. At the beginning of the war, everyone's attention was focused on the defeat of the Mongol army, and other things were not considered so much. Only now have the effects of the drastic reduction in the size of the territory become apparent.

Before the Battle of the Yellow River, the Great Yuan occupied eighty percent of Henan and more than seventy percent of Shandong. No matter how much the Song army scourges north of Rizhao in Shandong, it will not be able to occupy the land north of Rizhao. After the Battle of the Yellow River, ninety percent of Henan and eighty percent of Shandong were south of the Yellow River and were easily occupied by the Song army. Most of these lost lands were plains, and the Han plains occupied by the Great Yuan were halved. In addition, Dayuan also had to cede the Xiangfan area. Since the fall of the Jin Kingdom, the fruits of Mongolia's 50 years of efforts have been lost overnight.

On the other hand, the Song State occupied the entire Central Plains, and the combination of the Yellow River's natural hazards and sea power restored the situation to at least the level of the late Northern Song Dynasty. So much so that the Song Kingdom could build a lot of construction everywhere and look thriving.

That's the number of gases. Hao Ren said to himself in his heart.

After his own affairs were done, Hao Ren Wanhu set off from Dadu, and his first destination was Texas. It is very common for a family with a few hundred guards to have a hundred guards, not to mention that Hao Ren's ten thousand households only brought more than a hundred guards.

When they arrived in Dezhou, the subordinates who had already set out first had returned to Dezhou from the other side of the Yellow River. Not too far from Dezhou is Jinan, Jinan is a big city, after the Song army cleaned Jinan to the Han only, Jinan is still the most important city in Shandong.

"Wanhu, I've already contacted you. They said they just needed to give copper coins. ”

"Copper coins? Didn't you say that you could trade cattle and sheep? Hao Ren couldn't help but object.

"They said that the water is rising now, and they can't send a boat to carry away the cattle and sheep."

"Hasn't Song Guo always boasted of being unparalleled on the water!" Hao Ren Wanhu said with some indignation.

The subordinate did not answer, he was not in charge of the ships of the Song State.

When the surroundings fell into silence, Hao Ren Wanhu found that he had to make his own decisions. In an instant, 10,000 households felt a sense of loneliness. Internally and externally, everyone hopes to get hard currency from Hao Renwanhu. However, where do ten thousand households have such copper coins. After thinking about it, Hao Ren Wanhu ordered: "Go and ask again to see if Song Guo wants Zhongtong Yuanbao to hand over the money." ”

At this time, it was already the eighth month of the Song calendar, that is, the eighth month of the lunar calendar. August is autumn, and it often rains in autumn. As the boat passed through the Yellow River, a drizzle began to fall in the sky, and the heat in the air began to be replaced by coolness. Hao Ren Wanhu's subordinates tightened their necklines and sighed softly.

After getting off the boat, his subordinates went straight to the town near the Song ferry port on the south bank of the Yellow River. On the short road from the ferry to the town, there were Song cavalry patrolling back and forth. These cavalrymen rode Mongolian horses, which were not tall, with thick skin and long hair, and their whole posture looked a little cold. Mongolian horses, known for their hard-working and starvation, are certainly not enthusiastic and sensitive, and this kind of personality is not helpful for enduring harsh environments.

It was only seven or eight miles of road, and I saw two groups of cavalry. They wore Song uniforms and carried rifles on their backs, and unlike the Mongols, the Mongol scimitars were worn around their waists or behind their backs. The saber of the Song army was combined with the stirrup, and the scabbard was fixed vertically in front of the stirrup, and the cavalry could draw the sword out of the sheath when he lowered his hand. Judging from this configuration, the Song army patrolling here did not regard this place as an errand.

Continue on, and you will come to this side of the town. The town is divided into two parts, the front and the back, with a street in front and various shops on both sides of the street. The shop is divided into various areas, including three shops in the farm tool area, large farm tools that need to be dragged by cows and horses in the open space outside the store, and two large houses inside, where various farm tool samples are placed on the shelves on the walls.

These are all things that have been seen many times, and Hao Ren's subordinates did not stay here. He walked straight to the back room. These rooms are small, and in each room there are people entertaining guests. They are not responsible for selling farm tools, they are responsible for negotiating prices.

In the middle room, Hao Ren's subordinates entered. The man inside laughed: "You've been here a few times, what the hell do you want, it takes so long." ”

"But you only need copper coins when you open your mouths, and where are you now found so many copper coins? My master asked me to ask you, do you want to pay the money in Zhongtong Yuanbao. ”

"What's the use of your paper, if it's Zhongtong ingots copper coins, it's okay." The businessmen on Song Guo's side said with a smile.

"Dayuan's side has long only had to pay money, and we don't have much copper money ourselves."

Hao Ren's subordinates are not prevaricating, Mongolia mainly uses paper money, and the number of copper coins minted in Zhongtong ingots is not much.

"There are no Zhongtong ingots copper coins, and other copper coins are fine."

"Can't cattle and sheep? We'll need tens of thousands of sickles and hoes. ”

"If you can bring the cattle and sheep here, we will ask for them."

"It takes a lot of money to transport cattle and sheep. I can't afford to pay for that shortfall. Hao Renwanhu's subordinates hurriedly refused.

"If there are no cattle or sheep, they shall be exchanged for copper and iron."

"This brother, don't make such a joke." Hao Renwanhu's subordinates sighed. Dayuan's copper and iron is a monopoly, and the price is straight to the sky.

"You don't send cattle and sheep, you don't have copper coins, and you don't want to exchange them. You're embarrassing me. ”

"Where there is a reason not to do door-to-door business, you must have a way."

The business staff saw that the previous preparations were almost done, and he smiled: "There is no way, it depends on whether you are willing or not." There are no Mongolian horses that are good at running, and if there is, a three-year-old horse, as long as we can see it, can be transported downstream, and it is easy to cross the river from there. If we cross the river, we will count it as sixty taels of silver. ”

"Sixty taels is too little." Hao Ren Wanhu's subordinates said almost instinctively. Everyone is not white-necked in this regard, and when they hear this request, the purpose is to breed horses. The price of a stallion is sixty taels.