(Thank you for the Great Alliance! Thank you Zhao Wuxiu 2014, ufgw, the support of my dog's name is Mao!)

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The horse-soldier returned to the bow and walked slowly, and the followers followed each other, and the wolf rider who surrounded the three "assassins" also lowered his bow arrows.

Ma Han first asked the wolf cavalry: "What's going on with these people?"

Someone came out and bowed and said, "Report to the lord, my subordinates found that these people were wearing sharp blades and were descending along the stream. The direction was exactly where the lord was, so they led the crowd to intercept and arrest them."

Before Ma Han could speak, the youngest young man among the three, said angrily: "This thousand mountains are not a private place. Can you come, can we come?"

A wolf rider shouted, "This place is rarely visited. It is not appropriate for you to appear here, let alone with sharp blades and flee in panic after drinking. Isn't this arbitrary behavior?"

At this time, the strong man carrying four knives and calling himself Pu Yuan put the knife in the sheath sac, stepped forward, and bowed deeply to Ma Han: "This noble man, whose surname is Pu Yuan, is a small civilian in Shu, who is a professional career in casting tools. These two are apprentices of the small civilians. The knives they possess are all made by the small civilians. They are shocked and avoided because they hit the nobles. They are not intentional. Please forgive me."

The name is right, the hometown is right, the most important thing is the same occupation. Ma Han had a surprise intersection, thinking that it wouldn't be such a coincidence, right? I just talked about you, and you appeared in front of you?

At this time, Ma Jun couldn't help but say, "Shuzhong is probably not thousands of miles away from Liaodong. What are you doing here?"

Pu Yuan said respectfully: "When Xiaomin made swords, he felt that the quality of quenching water was different, and the impact on swords was also different. In order to refine, he was determined to travel all over the world and knew all the rivers. Xiaomin went south and north and went for five years. He heard that there was Tianchi in Baishan (i.e. Changbai Mountain) in Liaodong. The water was cold and the yin was pure, so he climbed Tianchi to identify the water. The day before yesterday, he went down from the top of Tianchi and passed by this place... The little disciple had a jar of Tianchi water on his back, which could be known by the noble person after testing..."

Ma Han finally laughed out loud and pointed at Pu Yuan: "That's right, it's you!"

When he heard the lord's words were not good, the wolf riders raised their bows together. The three masters and disciples of Pu Yuan were shocked and subconsciously drew their swords to protect themselves. Although facing the arrow cluster, even six swords, even sixty swords were powerless, it was better than surrendering them.

Ma Han repeatedly pressed his hands and cursed with a smile: "Whatever you are nervous, you have taken away your weapons, don't be rude to Master Pu." Then he raised his hand to Pu Yuan as a polite person, "My name is Ma Han, and I am the new prefect of Liaodong. The entourage guards are eager to be rude. Please don't blame Master Pu if you are rude."

Pu Yuan was shocked and was at a loss. Even though they were foreigners, they had heard of the change of masters from Liaodong, they did not think about it as muddy and dusty as their feet. They never expected that they would be seen in these steep mountains and hills today. The other party was so young, far from the two thousand stone high-ranking officials in their minds. What surprised them even more was that the young prefect actually saluted them. They also called Pu Yuan "teacher", which was a respectful title for skilled, music, and craftsmen with excellent skills and official positions.

How could Master Pu Yuan and his disciples receive such treatment? They were completely unable to react and were all stupid. Until the wolf cavalry entourage shouted "rude", the master and disciple woke up as if they were dreaming, and they both abandoned their blades and knelt down, saying that they were forgiven.

Ma Han stretched out his hand to Pu Yuan: "Can you see this knife?"

Pu Yuan immediately put his sword in his hands, raised it high above his head, and offered it respectfully.

Ma Han took the knife with his left hand and weighed it. It was about five or six kilograms. The blade edge was like white thread, with a thick finger on the back of the knife, and the color was blue and black. The blade was covered with scale patterns. It was so sharp that it was like a zither and melodious. Ma Han just witnessed the knife breaking a knife and a halberd. At this moment, he looked closely and found that the blade was completely damaged.

"What a knife!" Ma Han was amazed, and the entourage behind him could not help but nod.

Pu Yuan was still kneeling, his expression was still respectful, but his tone was filled with a hint of unconcealed pride: "This was a 70-refined steel knife tempered by Shu River. It took the civilians several months to forge it. It is difficult to ban an ordinary metal and iron."

Seventy-seven! All the entourages of the Wolf Rider all showed no wonder. In this era, it would be great to have a thirty-seven-seven-seven-seven-seven-seven-seven-seven-seven-seven-seven-seven-seven-seven-seven-seven-seven-seven-seven-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-some-

A civilian like Pu Yuan, if he had not been self-made, he would not be able to afford such a good knife even if he sold him, let alone possessing as many as four.

Ma Han is already sure that the person in front of him is Pu Yuan, who left a famous name in the history of Chinese Jin governance. In that book "The History of the Development of World Steel", it is mentioned that Pu Yuan, a famous craftsman of Shu Kingdom, cast three thousand swords for Zhuge Liang in Xigu, all of which were 72 times, and was known as the magic weapon in history.

The reason why Ma Han remembers it clearly is because there is an anecdote in it: When Pu Yuan made a knife, he once said that the Han River was weak and did not allow quenching, and the Shu River was refreshing, which was called the Yuan essence of the Great Gold, so he ordered people to take river water in Chengdu. Pu Yuan used it to quench the knife, but said that the water received was mixed with Fu water, which was not available. The water recipient defended the words without mixed words, Pu Yuan used a knife to draw water, and said that the water recipient was shocked and kowtowed, saying that a jar of water was overturned in the Fu water, and then mixed with eight liters of Fu water... Although this record was too magical, it also reflected Pu Yuan's skill in quenching from one side, and it was really at the level of perfection.

A master who has such a deep understanding of water quality quenching said that when he was young, he did not travel all over the world's famous mountains and rivers. Who would believe it? This is like the tea saint Lu Yu of later generations. For a cup of excellent tea, he did not hesitate to travel all over the world and find good springs. All the ancient masters are like this.

Pu Yuan is definitely the top sword casting master of the Three Kingdoms. Although he is still young and may lack experience, he doesn’t need to say his potential. Since he has encountered it, hehe...

Master Pu Yuan was really flattered at the invitation of a prefect. When he arrived at the camp tent, he had no place to put his hands and feet. When Ma Han ordered people to get wine and food, he said that he was shocked, which made Master Pu Yuan fall into a state of confusion and completely knocked out by the pie in the sky.

It was not until Ma Han introduced Ma Jun and several blacksmiths to him that Pu Yuan and his disciples returned to nature in front of their peers, and they had a great time chatting. After the banquet, Ma Han left Pu Yuan alone.

Before Ma Han could speak, Pu Yuan bowed deeply: "Now that the prefect is treated with such courtesy, Yuan cannot repay you. He is willing to give a hundred steel knife in his bag and offer it to the prefect." Because at the banquet, the prefect was not allowed to bring a blade before the prefect, so the knives of Pu Yuan's master and disciple were stored in the guards outside the tent, and Pu Yuan could only dictate and could not display it.

Ma Han smiled. He brought a knife on his body, just a decoration, and he didn't want to be too shocking. What kind of refined steel is in front of him, but his face was muddy. He smiled and said, "What I want is not just a refining sword, but thousands!"

Pu Yuan: "Ah..."

Ma Han clapped his palms and asked someone to send a Pu Yuan sword, held it in his hand, and slashed in the void several times. As the sword wind whistled, he suddenly said: "The sword is a soldier on the battlefield. He uses the blade to cut the enemy's weapon, split the enemy's shield, and cut the enemy's head. Therefore, the blade of the hundreds of refining treasures must be extremely sharp... Since this is the case, what's the use of the sword's back and refining it?"

Pu Yuan was stunned at first, and there seemed to be a little starlight on his pupils, and then he became brighter and brighter, and his body trembled slightly.

Ma Han's sentence seems to be an inadvertent statement, but actually contains the welding theory of the "Su Iron Knife" created by another founder a hundred years later, Qi Wuhuaiwen of the Northern Qi Dynasty during the Southern and Northern Dynasties.

For swords, the blade mainly plays an assassination role, so it requires a relatively high hardness, so that the knife can be sharp. Therefore, steel with high carbon content and high hardness should be selected to be made. The back of the knife mainly plays a supporting role, requiring relatively good toughness so that the knife will not break when it is subjected to a relatively large impact. In this way, it is necessary to choose a hard iron with low carbon content and high toughness. It is based on the above understanding that when making knives, it is possible to cleverly combine the hard iron and steel, and use the two just right in the right place, which not only meets the different requirements of different parts of the steel knife, but also saves a lot of expensive steel. It is indeed a major improvement in the history of metallurgy.

Pu Yuan is also a master, at least a quasi-master. Some things are actually only separated by a layer of window paper. I don’t think of it in my life, but just a little bit...

The iron knife made by Qi Wuhuaiwen was made by the steel filling method. Although Ma Han couldn't remember the specific method, he was deeply impressed by the practicality of its welding and the interesting interest of the double-liquid quenching method. It just so happened that Pu Yuan was a master of quenching. Ma Han said the next sentence: "In fact, it is not necessary to quench the spring water, river water, and urine..."

Pu Yuan jumped up and said, "This, how did this make it happen!" He immediately apologized for his loss of composure in front of the prefect.

No wonder Ma Han's words are simply a direct denial of his achievements over the years. How can he not jump?

Ma Han waved his hand without any hesitation and said, "I have seen a master of casting overseas. He told me his many years of experience. He said that when forging a sword, first quenching in the cow and horse urine with a high cooling speed can make the sword obtain better hardness; then when the temperature is low, then quenching in the grease with a low cooling speed to prevent the sword from cracking and deforming, and improve its toughness. In this way, a fine steel sword with excellent quality can be obtained. Well, he calls this the "double liquid quenching method". I am not a casting master, and I dare not assert that this statement is correct. Which water quality quenching is better? I think only the casting master himself can only come up with true knowledge."

This time, Pu Yuan stopped jumping his feet, but instead knelt on the mat, grabbed the big beard on his chin with one hand, placed his hand on his knees and clenched unconsciously, his thick eyebrows were furrowed, and his eyes were sometimes dim and bright. The hand was so tight that Ma Feng was worried that he would pull a large thigh of his beard.

After a long time, Pu Yuan finally seemed to figure something out and breathed a long sigh. His body was facing Ma Han, and he bowed respectfully and said, "Why are Pu Yuan lucky? I have been taught this secret that I have not passed on. Yuan has no choice but to repay me. After thinking about it again and again, I wish to build a house in Liao and make a knife for the prefect."

Pu Yuan was originally a blacksmith, where did he cast a knife? It was rare to be appreciated by the prefect of Liaodong and passed on secret techniques. Wouldn't it be good to do it under his command?

Ma Han laughed happily and stepped forward to help him up: "I will appoint you as a worker officer and cast swords and weapons for me in Liaodong. I will ask the army of the White Wolf Army."

The worker officer is the supervisor of the equipment in a county, with a rank of 600 stones... I was a white man before! Pu Yuan couldn't believe it. More importantly, once he was a worker officer, he would have funds, raw materials, manpower, and venues for all the crafting agents. Is there anything more joyful than this? This is like the scientists in later generations, whether they lack talents, but funds and equipment.

Ma Han was also very satisfied. Pu Yuan was able to forge 3,000 72-tried swords in a short period of time. This is not only a matter of superb skills, but more likely that he should master the steel filling method with faster craftsmanship. Otherwise, it is hard to imagine how to make thousands of swords at once with the casting level of this period. Maybe Pu Yuan has not developed it yet, but as long as he provides enough conditions to allow him to repeatedly experiment and have advanced theoretical guidance, who can say that this steel filling method or even Su steel method will not appear in advance?

In addition, whether it is a ring-headed sword, a spear or a halberd, they are weapons that will be eliminated in hundreds of years. To create a large sword and a spear, this is the mainstream weapon on the battlefield for thousands of years to come.

Liaodong needs strong soldiers, and strong soldiers need sharp weapons.

Ma Han is looking forward to the day when he is full of wings. (To be continued, please search for Astronomy, the novel is better, updated and faster!
Chapter completed!