Yang Zhongfu knew that there were three types of calendars in the world.
The calendar formed by the changes of the sun in different seasons, the calendar formed by the moon surrounding the earth, and the Yin-Yang calendar that takes into account both. The Yin-Yang calendar is used by the Song Dynasty today.
No matter which one is, it cannot be separated from astronomical science.
The study of calendar represents the study of astronomical phenomena and stars.
Yang Zhongfu gave a tribute: "I wish to go south to study."
"Yeah." Han Tuozhou nodded.
Sextant, this thing is the first weapon of navigation. It has invested a lot of money, and the cost of polishing crystals alone can scare people.
According to Han Jiang's plan, if you achieve a small success within one year and a great success within three years, you can allow the navy to sail far away.
Yang Zhongfu got the opportunity, but also lost his freedom.
He can go home, but even if he goes to the toilet, he will have at least two people with him.
However, Yang Zhongfu didn't care.
Previously, the Han Mansion developed the method of smallpox and the method of increasing rice fields. Yang Zhongfu had inquired about it and found that neither of these two secret techniques had been truly completed, but they had to be announced.
The price of the announcement is that it cannot be further studied.
Take the method of curing smallpox as an example. Lin'an City knows that it is to take poison from sick cows to make medicines, but what poison is it and how to make medicines.
Nothing left.
Even if these are not mentioned, craftsmen will keep their hands on their disciples. He can understand the Han Mansion's research on astronomical science.
Arrangement of a small official to go south is not too easy for Han Tuozhou now.
Two days later, on the day Yang Zhongfu went south, the Han Mansion invited the Jin envoys to the West Lake and displayed the Han Mansion's flying artifact.
The first is the same.
hang gliding.
There are loyal and brave servants of the Han family responsible for the display.
This one has a real finished product. Although it is still far from it, it is a half-waste product.
The Han family's servants were pulled up and flew up. After walking around the West Lake for a few times, they fell head-on into the West Lake.
Wanyan Xiang said to Han Tuozhou: "This is quite interesting. I will give me ten bounty ingots on my behalf."
"All things are subject to the command of the prime minister."
After Wanyan Xiang finished speaking to Han Tuozhou, he turned around and called the Jin official beside him, "This is called Fei, which means tying people to a big kite and asking people not to talk nonsense."
"Yes, Prime Minister."
The second thing is still a defective product. This time it is a huge hot balloon.
Better than the previous one.
Pulling off the long rope, it floated on the West Lake for half an hour, and then the hot balloon burned into a big fireball. The servants wearing asbestos coats fell into the water, and were rescued by the boats waiting in the lake.
Even if it is a defective product, Wanyan Xiang is also interested.
"If this thing can fly for one day, it will probably be more useful than Wanglou. If one day the research of the young master of the noble family makes progress, our Jin Kingdom is willing to pay a lot of money to buy it."
"I will definitely give you a few of them to the Prime Minister."
Compared with the reaction of the Jin Kingdom, officials in the Song Dynasty believed that this was an oversized Kongming lantern. What is there to study? It is just a child's fun.
Han Tuozhou would not tell these idiots how powerful this thing is.
In the Han family's absolutely confidential information, Han Tuozhou saw that after the completion of this object, it was a hundred feet long, could carry a load of thousands of stones, and a thousand two thousand miles a day. After reading this information, Han Tuozhou decided to make it at all costs.
With such a thing, even if there is a case, the Han family can evacuate Lin'an overnight.
Or, you have the capital to fight to the death in Lin'an.
Wanyan Xiang was also thinking that he should arrange for someone to study this thing.
This is a powerful tool for air reconnaissance of the enemy.
It is definitely an ordnance that will be of great help to the Jin army.
Wanyan Xiang's attention to this hot air balloon has aroused Han Tuozhou's uneasiness.
As a minister of the Song Dynasty, the two most important things to be an official are to study the preferences of the Emperor of the Song Dynasty, and the second is to study the Jin Kingdom, the mortal enemy of the Song Dynasty.
Those in the court could not see through it.
But Han Tuozhou knew very well.
Never underestimate the Jin people. Jin may not be good at rituals, music, poetry, singing and dancing, and may not be good at playing things.
The food is poor, and I don’t know how to grow grain.
But the Jin Kingdom is strong.
The Jin army had three battles and was strong. Children from aristocratic families were not proud of their archery and horse skills when they were ten years old.
The Jin Kingdom's ordnance is strong.
According to those who fled to the Song State after the fall of the Liao Kingdom, the Jin people secretly learned countless techniques of the Liao Kingdom, and were no longer persistent in building weapons, but crazy.
They equip the army at all costs, and even if countless people starve to death, they don't care.
From the technology obtained by the Liao Kingdom in the past and the technology obtained by the Jin Kingdom from various places later, they had the skillful plunger steel technology and learned how to make Persian steel.
It can be said that in terms of steel, the Jin Kingdom crushed the Song Dynasty.
But, it is only stronger than the Song Dynasty.
Not comparable to the steel technology Han Jiang has now, Yidongcheng Steel Floor can now produce ordinary steel directly. The regret is that it is limited to the small places in Yidongcheng and the raw materials are insufficient.
Han Tuozhou understood that it would take at least two years for Jiaozhi City to make a large amount of steel.
Wancheng is impossible, and the geographical environment determines that Wancheng cannot have a large steel workshop.
Lintao can be built on a small scale.
While chatting with Wanyan Xiang with Xiao, Han Tuozhou was thinking about how to cause some trouble for the Jin Kingdom. Going to war with the Jin Kingdom was already a great goal in Han Tuozhou's life.
Han Tuozhou was just thinking about it now, but Han Jiang had turned this idea into action.
Jiaozhi.
A VIP with a large tie came to Jiaozhi City.
The reason for tying him was to peek at the military secrets of the Song Dynasty.
Yelu Liu Ge.
For his younger brother's sake, the Mingzhou Navy did not make things difficult for him.
It should be said that it was not too difficult for him.
Tied it and sent it to Jiaozhi.
When Yelu Liuge met Han Jiang, Han Jiang was studying the new table.
According to Han Jiang's request, a newly created round table.
A total of nine chairs were provided.
The material used is agarwood.
The table was not painted at all, just a layer of wax.
After knowing that the person who was tied up was Yelu Liu Ge, Han Jiang greeted him: "Good guests, should you please have some meat if you want refreshments."
"I want wine."
"Prepare. Please."
After loosening, Yelu Liuge moved one shoulder and didn't complain.
Today is different from the past. His Yelu family is already a small person who has lost his country.
He struggled to survive in the cracks.
In the future, he has achieved a small glory with Temujin's support, but now he has nothing.
If there is.
He also had some Liao people following him, but was stared at by the Jin people as if they were guarding against thieves.
In the small hall, there is wine and meat.
“The meat is good and the taste is excellent.”
Han Jiang replied: "Because we used grass fruit, bay leaves, and nutmeg."
Brother Yelu Liu said directly: "I heard from my brother that I want to follow you."
Chapter completed!