There are actually many legends about making swords with blood, so when Xi Yunfei heard that Zhang Yajiu was going to make swords with pig blood, he thought of the allusion of Gan Jiang Moye.

According to historical records, during the Spring and Autumn Period, the princes fought for hegemony and wars continued.

In order to enhance combat effectiveness, all parties involved in the war selected domestic skilled craftsmen to develop weapons to defeat the enemy.

As the main weapon for close combat, swords were called "the army of hundreds of soldiers" at that time, and sword-casting masters were increasingly favored by kings of various countries.

In 496 BC, King Yun of Yue invited swordsman Ou Yezi to forge a swordsman for himself.

Ou Yezi took his wife Zhu and daughter Mo Ye, and went up the river along the river, looking for the "sacred iron" (iron mother) and "holy water" (cold spring water) needed to make swords in the deep mountains and dense forests.

One day, Ou Yezi saw a crack on the top of the mountain and exposed a "shen iron" when the mountain stream dried up. After the mountain stream was dry, he saw a copper mine. The sky was wind and rainy. Thunder God beat drums in the sky to cheer. Several dragons circled around the bottom of the furnace to hold the stove. The Emperor of Heaven helped him add charcoal to the furnace. After Ou Yezi woke up, he sighed: "The gods in the world are helping me!" So, he followed the guidance of the dream and found the "shen iron" and "holy water", "created the land and set up the furnace", and began to cast the sword.

Three years later, five "bronze composite swords" were forged, with the "elegant light through the sky, the sun and the moon competed for glory, the stars avoided the color, and the ghosts and gods were sad. Ou Yezi presented it to King Yue, who named these five swords "Zhanlu, Pure Hook, Victory Evil, Fish Intestine, and Juque."

From then on, Ou Yezi became famous all over the world with the sword he forged.

Gan Jiang from Wu was Ou Yezi's junior brother. He once learned sword-making skills with Ou Yezi and was also a famous sword-making master at that time.

He and Ou Yezi made swords in Wu State, and their reputations became increasingly great. After hearing this, the King of Chu appointed Minister Feng Huzi to hire Ou Yezi, and the two of them made swords for him.

After arduous exploration, the two finally found the "sacred iron" suitable for making swords, and "drilled the mountain of the earth" and "released the stream" to obtain the "thousand-year cold iron" and forged three swords "Longyuan, Taia, Gongbu" for the King of Chu.

According to legend, when Ou Yezi's daughter Mo Yezi married Gan Jiang, Gan Jiang, Mo Ye and his wife were ordered to cast swords for King Helu of Wu, they "made 300 boys and boys to wear charcoal." Mo Ye also piously cut off his hair and nails and threw them into the furnace to "gravel gold".

Another craftsman in Wu State even "killed his two sons and used blood to challenge gold" to forge swords.

According to legend, the famous sword Gan Jiang Mo Yezi was Ou Yezi who brought "the husband and wife into the furnace and then became a thing" (see Volume 2 of "Wu Yue Chunqiu"), and obtained the peerless famous sword that was talked about in later generations.

However, many people in later generations have studied that the so-called blood-casting sword is actually a rough process to increase the hardness of metals. After the human blood is burned, carbon elements will be generated. With the help of carbon elements, it doesn't matter whether it is close relatives. Putting cattle and sheep into the furnace will have the same effect.

In ancient times, charcoal was used to smelter metals, not coke. The new technology of iron smelting is still very immature, and the temperature of charcoal cannot meet the needs of iron smelting. Therefore, at critical moments, the human body with high fat and high combustion value can be pushed into the human body to generate carbon elements, which can effectively increase the furnace temperature.

The melting point of copper (1083) is low, so it can be smelted without a flesh and blood sacrifice furnace. However, iron cannot do it, and the melting point of iron (1535) is high, so it will have to be "sacrifice furnace", otherwise it will be difficult to melt. Therefore, iron was also called evil gold at that time.

If you put living people into the furnace, or cows and sheep, the effect should be the same. You can increase the furnace temperature and carbonize them to form steel. However, the ancients believed that animals have no spirituality, and the spirit of human beings is stored in the blood. Only by building a sword can the sword be made to produce spiritual energy, and even the blood of relatives can you create the most spiritual sword...

Xi Yunfei thought about this in his mind, and the man had already walked into the smelting workshop. What surprised him was that Zhang Yajiu actually built a stove to make a sword by himself, and it was burning charcoal instead of coal or more efficient coke.

"What's going on?" Xi Yunfei looked at Zhang Yajiu who was hitting the iron ingot seriously in confusion.

No wonder if pig blood is used to increase the furnace temperature. This guy didn't use coke at all. How could he melt the iron ingots refined from the blast furnace?

Zhang Yajiu turned his head when he heard Xi Yunfei's voice, hurriedly stopped the knocking movement, and bowed respectfully: "Yujiu has seen the husband."

Xi Yunfei nodded slightly and asked in confusion: "You don't need a good charcoal stove, why do you still use this backward charcoal stove? Is the temperature of coke too high, are you used to using it?"

"Coke?" Zhang Yajiu looked puzzled.

"What? You don't know what coke is?" Xi Yunfei was stunned when he saw this.

At this time, a sound of running came from behind him. Master Qiao Er looked at Zhang Yajiu with an awkward expression before walking to Xi Yunfei, saying with his ears: "This Jajiu has unknown origin, and I have not told him the secret of coke..."

"..." Xi Yunfei was immediately frustrated when he heard this. He said that Master Qiao Er was also good at thinking. For Zhang Yajiu, who had only met several times, it was always right to hide one hand. But... I remembered that many traditional cultures in later generations lost their inheritance because of the so-called hidden one hand? Xi Yunfei suddenly felt a little moved.

He sighed helplessly, without saying a word to blame Mr. Qiao Er. He waved his hand and advised: "I understand the concerns of the second master, but since I said that I have opened up authority to him, I have my own considerations. If I didn't come today and asked him to make swords according to the local method, but when I evaluated it, I thought he was using our new forging method. Do you think... is it fair to him? If he is really a rare master of sword making, is that because my misjudgment can only be missed for no reason?"

"I..." Mr. Qiao was stunned when he heard this. It took him a long time to realize that he had done something bad. His face turned red and felt a little anxious. He nodded quickly and said apologetically: "What Erlang said is that I am confused this time and I don't think about it..."

After the matter was said, it was over. Xi Yunfei turned around and asked someone to send all the pig blood to the cafeteria. Anyway, I bought it, so I can't waste it. It's good to make a Maoxuewang for everyone later.

As for Zhang Yajiu, he was taken by Master Qiao Ershi to the blast furnace and systematically learned the application of coke, as well as how iron ingots can form soft and hardness through two steel frying...

Xi Yunfei, who returned to Xijiazhuang, originally thought that today would be spent in such a dull and simple life again.

But unexpectedly, Asuna's cumshot actually brought him a surprise...

Tea room.

Asannell said anxiously: "Those herders were forced to gather. Please don't hurt them. As for Asann's cum, I will definitely stop him and will never disturb him."

Xi Yunfei sat upright, holding a cup of hot tea and drinking slowly. He only heard Ahn's request, but did not respond.

However, the Ashina AoShe, who seemed to be incompetent, had some courage and left the captured subordinates and ignored them. The Northern Turks lobbed various Turkic tribes near Shuofang to go south to attack Shuofang.
Chapter completed!