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Qibi Wuyun said: "Husband, you should stay in Yunzhou for a while this time." ”

Li Su said: "Definitely, I have to help my family Yun'er buy more dowry, so that I can marry her beautifully." I plan to develop Yunzhou to make your life more comfortable. ”

The climatic conditions in Yunzhou are not good, water resources are insufficient, and agricultural development is restricted to a certain extent. The condition of the ranch is not bad.

Yunzhou (Datong) is a world-famous coal capital, on the mountain of the Mawu Mountain generation, you can see coal gangue casually, and in many places, you can see high-quality coal when digging a few meters deep.

Cement limestone is mainly produced in the Upper Cambrian marine strata, with a total reserve of 215.176 million tons, mainly distributed in the Qifengshan mining area and the Langergou mining area, with simple hydrogeological conditions and easy large-scale mining.

In addition, the reserves of iron ore are also considerable.

Li Su plans to use coal, cement, iron and steel, and animal husbandry as the pillar industries of Yunzhou, and agriculture as auxiliary industries to develop the local economy.

Spring is still cold outside. During this time, Li Su was planning in the county king's mansion, and at the same time enjoying the two-person world with Qibi Wuyun, and his life was very comfortable.

In the meantime, the people sent by the Ministry of Industry and the Industrial School have arrived, and the preparations for development have been made.

In mid-March, the weather warmed up, and the entire Yunzhou Mansion came alive.

In the construction of coal and cement factories and mines, the people in the Ministry of Industry already have mature experience, and there is no need for Li Su to worry about it anymore. He devoted his main energy to the construction of the steel plant.

Yunzhou Iron and Steel Plant was established in the southern suburbs of Yunzhou City.

The mining industry in the Tang Dynasty was also relatively developed, and the main minerals were gold, silver, copper, iron, tin, lead, rock, mercury, cinnabar, etc.

The scale of the foundry industry is led by the coinage industry. During the reign of Emperor Xuanzong, the government had 99 coinage furnaces, and 327,000 coins were minted every year. The metal manufacturing and processing technology of the Tang Dynasty has developed to a fairly high level. Wu Zetian once cast a 105-foot-high Tianshu in Luoyang, and there was a 170-foot iron mountain around it. Some exquisite gold and silver ware in the Tang Dynasty adopted the processes of casting, cutting, cutting, polishing, welding, riveting, plating, and chiseling.

In the world at that time, it was at the leading level.

In terms of iron and steel smelting technology, during the Wei, Jin, Southern and Northern Dynasties, the steel-making technology of 100 was quite mature, and the steel-filling method of combining pig iron and wrought iron into steel was also invented, and Xiangzhou of the Northern Wei Dynasty was famous for manufacturing sabers.

However, the overall level of technology is still relatively low. During the Zhenguan period, the country's steel output was only 4,000 tons. Unlike today's steel mills, which can easily produce millions of tons a year.

Under his guidance, Li Su, a university engineering student and a powerful tool of Baidu, built Datang's first modern steel plant with a design production capacity of 820 tons. Construction has now begun.

In order to let Qibi Wuyun master the knowledge of industry, Li Su's activities were basically for her to participate.

On this day, they came to the Yunzhou Guanfu Weapons Factory.

Yunzhou Ordnance Factory is an ordnance manufacturing plant affiliated to the Ministry of War, and because the smelting industry in Yunzhou is relatively developed, Li Shimin specially approved the establishment in Yunzhou.

"Jingle bell, ding bell." With the sound of iron knocking, two craftsmen were working on a weapon.

Seeing them coming, Wang Jiu, the director of the Ordnance Factory, hurriedly came over to greet them.

Wang Jiu is small, thin, white-faced, and polite. He stepped forward and saluted and said, "His Royal Highness King Liang, His Royal Highness the King of the County." ”

Li Su nodded and said, "No need to be polite. He asked, "How is production going now?" ”

Wang Jiu said: "Now we can produce 160 horizontal knives and 40 Mo knives every day. Invite the two highnesses to visit the warehouse with their ministers. ”

In order to ensure the quality of weapons, under the guidance of Li Su, all the weapons processing factories of the Ministry of Industry are specialized in production. Crossbows, knives, spears, etc., all have specialized classifications. The Yunzhou Ordnance Factory specializes in the production of two types of weapons.

The Tang knife is not a type of weapon, but a general term for four types of weapons. "Tang Liudian" volume 16 arsenal order Cheng Zhi Zhangzhang recorded: There are four knife systems, one is called the Yi knife, the second is the barrier knife, the third is the horizontal knife, and the fourth is the Mo knife. It can be seen that the Tang knife is a general term for the types of knives in the Tang Dynasty, not a knife, so there is no "Tang knife" in ancient times.

Ritual knife: Gai Guban sword and the like, the Jin and Song dynasties have come to call the royal knife, and the later Wei said that the long knife, all of which are dragon and phoenix rings. To Sui, it is called the ritual knife, loaded with gold and silver, and the feather is held.

Barrier Blade: Cover the shield to defend against the enemy.

Horizontal sword: The sword worn by the soldiers, the name also comes from the Sui. "Tang Law Shu Yi" Volume 8 Guard Forbidden Law "The Guards of the Houses Shall Not Go Far in Battle"

Mo Knife: Long knife, held by infantry, Gaigu's broken horse sword.

Modao, this is definitely the pride of the Chinese in the history of weapon development! Second only to gunpowder!

The long-handled long knife is similar to Guan Yu's broadsword, but it is different. The weight is light, taking the imitation of the Tang knife Japanese knife as an example, the handle is much longer than the Japanese sword, the back of the knife is much thicker, and the soldiers of the Tang Army line up to hold the knife when charging, and the historiography records: "Entering like a wall, the people and horses are broken."

It can be seen that with heavy armor and a Tang knife, the power of the charge is very amazing. The ancestor of this knife was the horse chopping knife of the Han Dynasty, which was improved in the Tang Dynasty, and due to the great leap in China's smelting industry, the Tang Dynasty knife was sharper. And the handle is elongated for easy handling. It is terrifying in white-knuckle combat.

In the Battle of Hengros in July-August 751 (the tenth year of Xuanzong Tianbao of the Tang Dynasty), the Tang army fought a bloody battle with the world's second most powerful country, the Great Food Empire (Arab Empire). Tens of thousands of Tang troops fought against hundreds of thousands of Arab coalition troops and won a great victory. Its Tang knife caused huge casualties and great psychological deterrence to the Arab army.

Accompanied by Wang Jiu, Li Su visited the weapons warehouse.

Out of the warehouse, Li Su said: "Take a few Mo knives, I want to check them." ”

Li Su has extremely strict requirements for product quality, not only for weapons, but also for all industrial products.

Wang Jiu knew about his habit, so he didn't send someone to get the Mo knife himself, but asked Cheng Chumo and others to draw it by themselves. After a while, Cheng Chumo and the others each came out with a Mo knife.

Li Su took the Mo knife in Yang Kang's hand and looked at it carefully.

Mo knife, a kind of long-handled knife in the Tang Dynasty of China, the knife weighs fifteen catties (1 catty in the Tang Dynasty is equivalent to 660 grams in modern times, and 15 catties in the Tang Dynasty is equivalent to about 10 kilograms in modern times), also known as a machete, seven feet long, three feet long blade, and four feet long handle.

Because of the heavy blade of the Mo knife, it is extremely powerful, and a strong soldier can easily cut people into two pieces when he picks up the Mo knife. The mighty ones can even cut the horse in two.

In front of Modao, even the Mingguang armor equipped by the Tang Army was an ornament and could not play any defensive role. Just imagine, even without a blade, a 10-kilogram iron rod hitting the armor will not be able to withstand it for the people below.

Li Su held the knife in both hands, raised it high, and slashed at a piece of wood the thickness of a person's calf.