Diamond is undoubtedly the hardest substance in the world, almost indestructible, and is mainly used in industry for chipping and processing superhard metals.

All thanks to the southern expedition, the gem pit of the Jinxuedi people, a large number of variegated industrial diamonds were piled up in the open air as garbage, and the industrial diamonds accumulated by more than 300 years of mining were piled up like a hill, which undoubtedly provided an excellent way for metal cutting tools, thus solving the short-term tool problem to a large extent.

However, the hardness of diamond is extremely high, and it is difficult to grind ordinary grinding wheels, so diamonds are usually processed with diamonds to achieve the shape requirements.

The diamond powder produced in the diamond processing process is an excellent resource for the manufacture of ultra-hard gold steel grinding wheels and flat grinding tools.

At the same time, Yongxingcheng made alumina grinding wheels with selected bauxite by sintering method four years ago, thus solving the grinding problem of knives and ordinary metals in one fell swoop, and taking this as the starting point of technology, a complete set of grinding tools and instruments have been developed one after another, even if it is modern, alumina grinding wheels are still important industrial grinding wheel raw materials.

A total of 60 pieces of industrial diamonds are polished by the Gonggong faction, both round, 90 degrees, 60 degrees, 45 degrees, 30 degrees and other different structures, using the drip copper brazing method, which is fixed on the iron knife holder, and finally the alumina grinding wheel is used to remove the iron-clad copper, and the tip of the knife can be used.

However, diamond is not a panacea, has its inevitable limitations, a few years later, the mass production of machine tools popularized, the grinding progress of diamonds obviously can not keep up, has exposed the long production cycle, high grinding costs and other problems.

In addition, the processing of industrial diamonds is limited by the shape and processing difficulty, and can only be used for general forming cutting tools, such as 90-degree cylindrical cutters, groove cutters, offset cutters, face milling cutters, etc., and cannot produce a large number of special-shaped tools like traditional tool steel.

On the twenty-eighth day of January, Chen Qu, Chen Dian, father and son led the navy to dock at Yongxing City and transported back a group of wounded people with the ship.

Since the horses have been transferred to the front line, there are no war horses to requisition except for the forbidden army near Shanling, and the military battalion will take the naval warship to the landing in Qiunan County, and then change to foot.

On the twenty-ninth day, King Xian set up a private banquet in the palace for Baili Yan to go on the expedition, and the Marquis of Lu, the Marquis of Xuanting, the prince and the princes were invited to attend.

After the Yongxing Incident, after more than half a year of cleanup, the princelings existed in name only, or released, or transferred from their posts, the prince was set aside, but Xihuan was not idle, and he was honest during the alliance, but as soon as the king of Huijin left, Xihuan's face of changing his past mistakes was gone, and his vicious nature was once again revealed.

Soon after discovering that King Xian was overthrowing the prince, he began to raise protégés in the prince's mansion in the name of the prince.

At present, the trend of raising protégés and disciples is prevalent, and there is even no shortage of dead people.

However, those who have a skill, with their skills to give advice to the owner, or provide technical support, in order to win the appreciation of the owner, have a strong personal dependence relationship.

No matter what kind of skill you are good at, it is related to the owner. Even if you are a horse, as long as the owner loves horses, there is a place. Even some crooked ways, specializing in pimping, can also be useful.

And the powerful scholars and doctors can store customers and diners, and the prince is no exception. For example, Baili Yan and Gao Xun are Zhao Xun's guests, Fan Tao is the son of Xiangguo's uncle Kuozhong, and Gongsun Yue is the middle concubine of the prince of Xian, and after helping him ascend the throne, he became the prime minister who monopolized power.

Now Zhao Anling and Zong Botai can also be regarded as Bailiyan's disciples, but this relationship is relatively equal, at least Bailiyan has never taken the help of the two for granted.

It can be said that protégé diners serve the host, to a large extent, for a good future.

At present, there is neither the imperial examination system nor the regular selection system, and the selection and cultivation of talents depend on the intergenerational renewal of the aristocratic class itself.

Therefore, the powerful hold the power of extreme glory and wealth and personnel recommendation, but if you want to get ahead, you can only serve the powerful people, once the owner gains power in the future, its subordinates will inevitably be recommended by the owner, and jump into the official career.

The disadvantages brought about by this are also very large, one of which is uneven in talent, and there is no unified standard for measuring the ability to inspect, which leads to many powerful people having many guests and diners, and very few can really do things. As a result, the institution is bloated, and a lot of material resources are used to feed the diners.

Once the owner gains power, he will inevitably install his own doormen everywhere, and these doormen are not all suitable talents, many of them are rice buckets who can only play tricks and have no practical talents. The resulting series of administrative problems will become huge hidden dangers, such as corruption and perversion of the law, leakage of secrets and betrayal of the country.

There are many talented people among the second guests, but due to the various problems of the host, they are either not reused, or there are many people who are buried, and many talents are scattered in the homes of the scholars and nobles, and cannot be put into the operation of the country, which is not only a loss for the country, but also a great waste of the limited human resources at present.

Of course, it is not that the door customization system is not without its adaptability, in the agricultural Bronze Age with low productivity, talents are undoubtedly rare, and it is the inevitable result of the imperfection of the aristocratic system and system.

Xihuan raised a large number of disciples in the name of the prince, and had great plans to start another stove and sing on stage again.

Many of these diners are from the Jin Kingdom, but in fact, they are all capable officials who were selected from the Jin Kingdom and transferred to the Prince's Mansion in the name of the doormen. These people are unknown, and they were all personally selected by Fan Tao, recruiting young talents from various counties of the Jin State and sending them to Xianguo, trying to turn the Xianguo Song State into a vassal in the future, from a lower state to a vassal.

The lower state is more vassal than the vassal, the difference is that the lower state is still an independent vassal state, the government has tax revenue, internal and foreign affairs have complete autonomy, the upper state has the right to garrison troops, and can ask for tribute from the lower state.

The vassals were completely reduced to puppets and protectorates, losing half of their internal power and tax rights, and the ministers and even the taiwei were directly appointed by the suzerain, and the capital was stationed in the suzerain's army.

The reason for this is that Xiangguo and Taiwei were controlled by the Jin State, and it is naturally impossible for the King of Song to leave the country without henchmen, so it is logical for the Great Sima Kuangshuo to stay in the country.

Xihuan raised the Jin people in the name of the doorman, nothing more than wanting the prince to ascend the throne in the future, appointing the Jin people as officials, and then gradually changing blood until he completely controlled the government, and his intentions were extremely sinister.

At this time, under the corridor by the lotus pond in the prince's mansion, Xihuan was not happy that Baili Yan was about to go on an expedition, but hated him even more:

"General Ji, can you get rid of him on the way to the west of Baili Yan."

"I'm afraid it's not easy, Baili Yan's martial arts are strong, he has practiced martial arts every morning over the years, and his spear skills and swordsmanship are becoming more and more exquisite, and his martial arts are probably few people in the world who can match them. Coupled with the armed battalion guards, it may be difficult to assassinate. If it is poisoned, it will be even more difficult, it is originally Lang Zhong, and he learned the evil medical skills, Gongsun Yue was broken by it twice, it is really difficult to have a chance. ”

"Then there's nothing you can do?"

Ji Jinsheng shook his head helplessly:

"Unless the Black Turban Army annihilates it, I'm afraid it's difficult."

"I'm really angry with this palace!" Xihuan's anger jumped on his face, his chest rose and fell, and he said again when he was young: "It's a close eye, as long as there is an opportunity, start immediately, and there must be no relaxation." Baili Yan is not dead, and the Jin Kingdom is uneasy. ”

"Subordinates obey."

"In addition, what is the school that Bailiyan wants to set up in Chenling City to be investigated, what kind of Mingtang is he doing."

According to the understanding of the subordinates, more than 50 schools have been set up in Yongxing City and the surrounding territories for more than ten years, not counting the schools in Zhongxing, Tailai and Longsheng.

However, under the rule of Yongxing City, all children who have reached the age of eight can be enrolled at half a price at home, and the children of fallen soldiers and military attachés can be enrolled at no cost, and it is roughly estimated that there are at least 30,000 children between the ages of 8 and 16, craftsmen, etc., or even more, and it is believed that there are also women's schools. ”

"What, Girls' Academy!" Xihuan was taken aback when he heard the news: "He Bailiyan is crazy, how much does it cost every year, and now he has to build a school in Chenling, what does he want to do!" ”

"The subordinates think that this is what makes Bailiyan different from ordinary people, and it seems to be a loss to run a school now, but in the long run, it is a merit in the present and a move in the future. The pillars of the country are nothing more than talents, Bailiyan's new education, intended to cultivate talents, if in the future, these tens of thousands, or even hundreds of thousands of talents, even if only half of Bailiyan's ability, will be a huge disaster for my Jin Kingdom and even the entire Central Plains.

But his subordinates thought that this move was also the way to stabilize the country and revitalize the country, and my Jin country should also follow suit. ”

"Ridiculous, this costs hundreds of thousands every year, with the population of my Jin Kingdom, how can it be imitated."

"Her Royal Highness the Princess, since Baili Yan came out, every one of them has its deep meaning. Just as in Yongxing City, Xianguo tightened his belt, squeezed out more than a million stone grain, and built Yongxing City, and soon after Yongxing City began to produce iron, Xianguo iron production increased year by year, which made Xianguo turn from decline to prosperity.

Later, he vigorously promoted the skills of 100 craftsmen, and now it has been proved that it is this move that made Xianguo lay the foundation of 1.3 million catties of iron production in Yongxing City in one fell swoop. In those years, the school was opened to teach people to read and write, and now more than ten years have passed, and there are many literate people in Yongxing City, and now it vigorously promotes the school, which is to lay a solid foundation for the prosperity of Xianguo in the future.

In this way, without spending a single soldier, without shedding a single drop of blood, the Xianguo can easily seize the supremacy. Looking at today's Central Plains, there are only a handful of people with an annual output of 200,000 catties of iron.

With only one city, Xianguo will not lose to the Central Plains, and it is already a well-deserved overlord. Although it does not seek hegemony, it is undeniable that no country is an opponent of the Xian State in terms of combat strength, military strength, agriculture, and industry and commerce.

If this continues, I am afraid that in a few years, the tax revenue of the Xianguo will be on a par with that of our Jin Kingdom, and the overturning of the Xianguo will become more and more slim. If I can't follow the example, I will be deceived by the Xian Kingdom in the future, and I hope that the princess will be clear. ”

King Xian intended to train Jiang Can as his successor, so he wanted to arrange to follow Bailiyan to learn how to govern the country.

In order to hide people's eyes, Bailiyan opened five new-style Erlang schools in the name of opening a new-style school. Four of them were open to the common class, and one was outside the west gate of the royal palace, which recruited the children of the powerful and also opened a women's school.

After more than ten years of development, Yongxing City has set up more than 50 boarding schools of various types inside and outside, based on Erlang School, and developed from the bottom up to the juvenile school, middle school hall and university hall.

Over the past ten years, Yongxing City has initially built an education system, coupled with the rapid popularization of mathematics in these years, the education system has basically taken shape.