After Zhu Qizhen returned to the palace, he immediately started to look at various rulers.

Generally speaking, there are construction rulers, tailoring rulers, carpentry rulers, etc. It seems that each trade has its own specialized length unit. For example, the length units used by goldsmiths and carpenters are definitely different.

If you look at the details, it is naturally useless.

However, it is not that the imperial court did not work hard on weights and measures. At least there were unified standards for the buckets, feet, liters, and stones used to collect taxes.

Most of them follow the previous generation with slight changes.

As for very detailed things, it is up to the people.

Because you are doing the work at home, the court has no need and is too lazy to take care of it.

What Zhu Qizhen wanted to do was to unify all weights and measures, center on a benchmark, determine all weights and measures, and form a system.

This is easier said than done.

This is quite a large project.

Determining a benchmark is harder to pin down.

The definition of meter commonly used in reality is based on the length of the earth and the speed of light.

Zhu Qizhen was also inspired by this and came up with two ideas.

The first idea is the source of traditional Chinese weights and measures, which is the Huang Zhong Law.

The origin of weights and measures in the Han Dynasty.

The Huangzhong tempered pipe method is to use different tempered pipes to play different notes, and the first tempered pipe is nine inches. The ancients discovered that as long as the pitch is determined, the length of this tempered pipe is constant.

The volume in this tube is also the most basic unit of weight.

All weights and measures are based on acoustics.

To be honest, Zhu Qizhen is still doubtful about this statement. Whether this method is accurate has not been tried personally.

However, he left this matter to the Ministry of Rites.

It is not to reproduce the Han system, but to establish a benchmark.

For example, the construction ruler was most used in the Ming Dynasty. Although the imperial court issued many official rulers to various places, how can we confirm that the length of this official ruler is prepared.

If in the process of tax collection, even if there are errors in weights and measures, they can still be used. If the people do not fight with the officials, they will only suffer losses.

But in this large-scale industrial division of labor, there cannot be any deviation.

Nowadays, the processing is all made of wood, so it's easy to handle. It's a bit worse, just put a piece of wood in it. But in the future, most of them will be made of iron. Is it possible to put an iron block in it?

The method of the Han Dynasty was good. As long as a rhythm tube could be made and the pitch determined, its length would be only nine inches.

The second way of thinking is the way of thinking of the French. The definition of meter just started is one ten millionth of the distance from the equator to the North Pole. The achievements in astronomical literature are also poor.

The monk once measured the length of the meridian line.

Just intercept an integer that is close to the weights and measures of the Ming Dynasty.

This also takes into account the issue of replacing weights and measures. The Ming Dynasty has implemented weights and measures for so many years, and it is not a good idea to abolish them all at once.

In fact, during the Republic of China, the weights and measures established included city feet, meters, cities, and kilometers. This may seem complicated, but in fact the core is the same.

This matter was naturally left to Qin Tian Jian.

As for Liu Dingzhi's problem, he ordered the palace to build a batch of official rulers for temporary use by various factories.

After all, due to craftsmanship issues, there is actually a small error between official rulers and official rulers. At least most of the existing clear rulers are not consistent.

For such an almost purely academic question, Zhu Qizhen could only find time to summon Beilin and Hu Xi to ask about the progress.

There was a lot of rain during the Spring Festival this year, and Hebei's spring plowing was going well, and it looked like a bumper harvest was in sight. However, the unfolding of the war in Haixi was beyond Zhu Qizhen's expectations.

This accident happened to a key figure, Li Manzhu.

Jianzhou Wei.

Today's Jianzhou Guard is different from the previous Jianzhou Guard.

It has a somewhat deserted look.

Because Jianzhou Wei, who was previously the leader of the Jurchen tribe in this area, has shown a state of decline.

The reason why Jianzhouwei became the leader of the Jurchen tribe in this area has to be said about the location of Jianzhouwei. He was too close to the Ming Dynasty, just under the border wall.

This geographical location has brought great benefits to Jianzhou Jurchen. The biggest benefit is the entrepot trade between the Ming Dynasty and Jurchen tribes.

Jianzhou Jurchen made a lot of profits from this.

Secondly, Jianzhou Jurchens have strong soldiers and horses. It is difficult to say clearly whether it is the strong soldiers and horses that can obtain this benefit, or it is with this benefit that the soldiers and horses can be strong.

But since the establishment of Haixi Town, the situation of the Jianzhou Jurchens has changed.

Although the land route from Liaodong to Haixi still has to pass through the Jianzhou Guard, it brings more restrictions and restraints to the Jianzhou Guard. The army often crosses the border, so that the Jianzhou Guard below even knows the strength of the Ming Dynasty.

Li Manzhu himself was not very respectful.

In particular, Fancha took him to Haixiwei. Although he is now only a member of a thousand households, in the Ming Dynasty system, Fancha is already one of his own.

Moreover, under Yi Shiha's suggestion, Fancha had already changed his Jurchen surname to a Han surname, that is, he changed his surname from Aisin Gioro to Jin.

Therefore, in all the documents and records of the imperial court, there is no such person as Aisin Gioro Fancha, only Jin Fancha.

In other words, even if one day Jin Fancha made great achievements and stood in front of Zhu Qizhen, Zhu Qizhen would not know what relationship this person had with Aisin Gioro.

Not to mention, with the establishment of Haixiwei, a large amount of food came ashore from Haixiwei, which suddenly made Haixiwei the economic, cultural, and political power of this area.

center.

The products I once requested from Jianzhouwei were sold directly at Haixiwei.

The interests of Jianzhouwei cannot be guaranteed.

Yishihan was able to build Haixi City, and commercial interests also contributed to it. The officers of Haixi Guard up and down all benefited from it. After all, everyone worked so hard to come to this wild place, not just for the imperial court.

Salary is up.

Therefore, Li Manzhu also knew that the benefits in this area could not be regained.

In fact, financial benefits alone were not enough to make Li Manzhu betray.

More factors are political.

Li Manzhu, the Jianzhou Guard sandwiched between Liaodong and Haixi, instinctively felt uncomfortable. He also knew that it was not just him who felt uncomfortable, but Yi Shiha was probably also uncomfortable.

Although the basis of Haixi is actually the sea route that can only be navigable for nine months every year, because the Ming Dynasty opened the sea ban, some civilian ships are even willing to sail to North Korea and the Haixi route.

While the sea route is becoming more and more prosperous, Yishiha has never relaxed its efforts to strengthen the land route.

After all, these generals have been fighting on land all their lives and are very worried about the sea route, not to mention that the sea route is frozen for more than three months a year.

Although during the port closure period, heavy snow also blocked the mountains on land, making it very difficult to travel. However, Yashiha still strengthened the post station from Haixi to Liaodong.

Castles should be built one by one at each post station.

Although each one is not big, it can probably station about 500 people for the convoy to take shelter. This string of castles, each one about 50 miles away, is built in a difficult and dangerous place, firmly blocking the land transportation from Liaodong to Haixi.

It looks like a net.

And he is the fish in the net.

Li Manzhu was overwhelmed by this pressing sense of urgency.

Before Li Man came to live, he responded to hundreds of calls in this area. Although there were only more than 10,000 men and horses, he could temporarily recruit various Jurchen tribes to join the expedition and pull up tens of thousands of men and horses, which was not a problem.

After the establishment of Haixiwei, such a good thing is no longer even a thought.

Jurchen tribes from all over the country joined the army in Haixi one after another, and the most elite troops became the Jurchen cavalry under Shi Heng.

Li Manzhu felt that his position was being shaken all the time, but he had no choice.

The situation is not up to anyone.

If it were not for Wa Ci in the Battle of Mulan River Guard, Li Manzhu would not dare to make any move no matter how many thoughts he had in his heart. He even learned from Mao Lianwei and Li Zhong.

Find a way to use the troops of Jianzhou Guard to give yourself glory and wealth.

But the emergence of Wa Ci gave Li Manzhu more choices.

A wolf that is accustomed to eating meat can only be willing to be a dog. Last winter, the Wa Ci messenger appeared in the Jianzhou Guard several times.

Li Manzhu has been hesitant, or rather hesitant, but bargaining.

And today, Li Manzhu finally made up his mind.
Chapter completed!