When Gongsun Chan and Yuan Shao fought. Liu Bei was in Qingzhou, just let Guan Yu improve his guard in the plains. I don't care about it anymore. Liu Shuo, the king of the plains, and Yuan Shao have been eyebrows, and Liu Bei knows it very well in his heart, but he just can't hold back and haven't had a seizure.

After Emperor Liu Zhi of the Han Dynasty ascended the throne, he named his younger brother Liu Shuo, the marquis of Duxiang, as the king of the plains, and offered the incense of his father Liu Yi. Liu Yi, the grandson of Emperor Liu Wei of the Han Dynasty, the son of Liu Kai, the filial piety king of Hejian, in the sixth year of the early Yuan Dynasty, the Empress Dowager Deng summoned the sons of the king of Jibei and the king of Hejian to Beijing to see him. Seeing that Liu Yi had an outstanding appearance, he was named the king of the plains, and the heir of Liu Sheng, the king of the plains of the Han and Emperor Liu Zhaozi. In the second year of Yongning, the eunuch slandered Liu Yi for ill intentions, and Emperor An of the Han Dynasty pushed the boat down the river to degrade Liu Yi as the marquis of the capital. After Liu Yi's death, the son Liu Zhi attacked the lord, and it didn't take long for pie to fall from the sky, Emperor Han Zhen died, and the general Liang Ji and Empress Dowager Liang established Liu Zhi as emperor. It was for Emperor Huan of the Han Dynasty. After Emperor Huan of the Han Dynasty ascended the throne, he posthumously honored his father Liu Yi as the emperor of filial piety, and the mausoleum was called Boling. is posthumously honored as the emperor, so naturally no one can guard the mausoleum. So he named his younger brother the king of the plains, let him take good care of his family in Boling, and sacrifice Boling on time by the way.

Liu Shuo's fief is in the plains, but Boling is in Jizhou. and Yuan Shao have the affection to establish the emperor together. Therefore, he often wrote to Yuan Shao to talk about the customs and people of Qingzhou. Liu Bei made Guan Yu the minister of the plains, and the first army of Tunqingzhou was here, and he did not mean to supervise and warn Liu Shuo, the king of the plains.

Liaodong is now developing well, and everything is on the fast track. There are Lu Zhi and Huang Zhong guarding them, and Fuyu, Wuhuan and Xianbei Zhuhu are all very honest. A steady stream of furs, medicinal herbs, and iron ore and coal mines from Liaodong were transported to Qingzhou by sea ships.

With enough resources, it is natural to make steel. At this time, with the traditional method, the craftsmen are a little busy. The problem was reported to Liu Bei, and when he picked up the report, it turned out that after a larger blast furnace was built and coal and stone were used instead of charcoal fires, the blowers could not keep up, there was not enough oxygen supply, and the fuel could not be fully burned.

When there was nothing to do, Liu Bei called Lu Min and Gong Cao to go to Le'an. When he arrived at the place, Liu Bei saw the blast furnace standing high on the plain, as well as the ore piled up like a hill in the open air, and the dense crowd of workers. There was a trance in his heart, and at this time he actually felt a trace of the shadow of the industry of the later generations.

Gathering his mind, Liu Bei waved his hand to stop the bow of the officials who came to greet him, and said, "No need to be polite, wait and lead me to see it." The ministers didn't dare to slack off, so they sent someone who could speak well, and while leading the way, he introduced the situation here to Liu Bei.

After gushing endlessly, Liu Bei also listened to a rough idea. He didn't know much about mechanics. didn't say much, so he said: "Qingzhou's civil and military iron, more than this, is equal to Qingzhou's meritorious." If there is something difficult, you can report it quickly. ”

Someone next to him said: "There is nothing else to do, only the wind blow, because the manpower is not enough." Xiaochen once heard that Nanyang Taishou Du Shi had the art of water drainage, but after many years, I don't know if this method still exists in the world? ”

Liu Bei listened with great interest, the problem that none of you can solve, someone can solve it more than a hundred years ago? So he asked Lu Min who Du Shi was. Even though Lu Min was full of poetry and books, he only remembered that Du Shi had been Nanyang Taishou, and he didn't know the specific situation.

Liu Bei said in his heart, he had to check it out when he went back. So he said: "I know, I should order the ministers of the pastoral government to search for Du Shi's water drain technique." ”

He turned back and instructed Bing Yuan: "Iron smelting, urgent business." Iron and coal are toxic, and the craftsmen are treated with preferential treatment in terms of diet and wages, so that the craftsmen do not have to work and pay attention to hygiene. Bing Yuan was beside him, writing them down one by one.

Liu Bei went all the way non-stop and returned to Linjing. After arriving at the pastoral house, he instructed the left and right to check the information of Du Shi. After a while, Du Shi's information was placed on Liu Bei's desk. Du Shi, the word Jungong, a native of Ji County, was a servant of the imperial history when Emperor Guangwu, and later became the Taishou of Nanyang. During his tenure, he invented the water drain, which is a hydraulic blower.

To smelt iron, it is necessary to have a high furnace temperature. The blower is an important power equipment for blast furnace ironmaking. It can provide oxygen for combustion to the blast furnace, and the size of the air volume also determines the smelting strength of the blast furnace. Since the Shang and Zhou dynasties, Han craftsmen have used skins to blow the wind, and the blowing devices were originally manpower, and then gradually developed to animal power. But people and animals are not well used for water, and people and animals will be tired and need to rest. And the water flows endlessly, day and night. When Du Shi was in Nanyang, he had a whim and creatively designed a water drain to liberate manpower and animal power. Once the water drain was introduced, it was very popular. History is that with less effort and more work, the people will do it. It's just that a technology that wants to spread quickly was not so easy in the Han Dynasty. The water drain is only in the Nanyang area. Although Qingzhou craftsmen have heard of the name of water drain, they have no way to create a water drain.

However, Liu Bei was not worried. Because Qingzhou now not only has many skilled craftsmen, but also has a academy. The scholars in the academy are not bad at all. So on the second day, Liu Bei ran to the academy.

In the academy, the great Confucians gathered, each commenting on the book, and Liu Bei did not bother them. I went straight to Gewuyuan. Gewuin is a peculiar existence in the academy. Not to mention the largest area, there are also the most scholars inside. However, there are the least number of lecturers inside. Because there are few people who understand. Liu Bei stopped coming most of the time except for the first time when he often came to a class. Because he found that after he had thoroughly translated his "Gewu Foundation" and "Introduction to Mechanics", many people raised questions that he could no longer answer. In that case, let's go free-range. Until now, Liu Bei didn't know what kind of surprises these people could bring to him.

When he arrived at Gewu Academy, Liu Bei gathered everyone and asked, "Does anyone know that Nanyang was too protective of Du Shi when Emperor Guangwu was the ancestor of the world?" ”

Someone said: "Envoy King, I know it." ”

Liu Bei looked at this person, if he was thirty or forty years old, with a white face and a slight beard, bright eyes, and a thin face. Heart Dao, even Lu Zida, who is known for his erudition, doesn't know that this person is a great sage in the mountains? Let me try. So he said: "Qing can know the technique of Du Gong's water drainage." ”

The man pondered for a while, and said, "I know a little bit about it." ”

Liu Bei was overjoyed, the Han people have always been modest, and they know a little bit about one or two, at least they know seven, seven, eight, eight. Then he asked, "Who is Qing?" ”

The man stepped forward and saluted, "Nanyang Han and Han Gongzhi are here, and I will meet Liu Yuanjun." ”

Liu Bei helped Han Ji up and said with a smile: "Don't be polite, come with me." So he took Han Ji to the quiet room and asked right. After talking about it, Liu Bei felt that he had picked up a treasure.

Han Ji, after Han Xin (Han Wang, non-famous general Han Xin), his ancestor Han Shu, so Hedong Taishou, father Han Chun, so Nanjun Taishou. His home is Shizhou County. Han Ji was promoted as filial piety when he became an adult, and he was requisitioned by Sikong, because of the yellow turban chaos, Han Ji should not die. Secluded in the mountains of Luyang County, Sun Jian and Liu Biao fought for Nanyang, in the Luyang War, Han Ji had to go out of the mountain, Yuan Shu heard his name, wanted to recruit it, Han Ji did not want to go, and heard that Qingzhou Liu Beili Academy, all Confucianism gathered. That's why I moved to Qingzhou with my family. After arriving in Qingzhou, he entered the academy to listen to the Confucian lectures, and liked Liu Bei's words, and he actually mixed in the academy for several years.

His family is a member of the Nanyang Shi clan, so he naturally knows Du Shishuipai. This kind of practical technique is collected by many family members, and the Han family is no exception. When I met Liu Bei today, I saw Liu Bei asking, so I went out to respond.