Zhao Guo, Handan County......

Seeing Zhang Xiao walking over with a black stone in his hand, everyone present retreated in horror, but Cen Yan still kept stopping: "His Royal Highness the Prince, put it down......"

Zhang Xiao didn't care, picked up and asked Le Cheng and the other accompanying people, "Do you know what this is?" ”

Lecheng had been staying here all year round, but he was only able to meet today, and the rest of the people who accompanied him didn't know anything about it. Pen? Interesting? Pavilion wWw. ｂiquge。 info Lecheng looked at the prince and asked him, thinking that the prince knew the origin of this thing, so he asked rhetorically: "Does the prince know?" ”

Zhang Xiao heard Lecheng's rhetorical question, threw the coal in his hand directly to the ground, clapped his hands and patted the ashes in his hand and said: "This thing is a rare thing, but it is not a stone that can bring bad luck, the name of this thing is: coal!" ”

"Coal?" After hearing the prince's words, it was the first time I had heard of the word "coal"! Everyone looked at the prince with questions. But I don't understand why this black stone called "coal" has attracted the prince's special attention!

For everyone's questions, Zhang Xiao can also understand! When coal began to be used, it was also in the Han Dynasty, and the earliest record is none other than the ancient book "Classic of Mountains and Seas" of Zhiwei during this period, which called coal as Shini!

Le Cheng heard the prince say that this thing is rare, thinking that he must know the purpose of this thing, and continued to ask: "Your Royal Highness the prince, I don't know what the use of this thing is?" ”

After Zhang Xiao heard Le Cheng's question, she wanted to say it directly, but she looked around and saw that there were a lot of idlers around! Just pointed to the gazebo in the distance and walked somewhere!

When he walked there, Zhang Xiao looked at the people who came with him: "Coal is a combustible thing!" The black smoke we saw when we came here was supposed to be the release of the coal when it burned! ”

When everyone heard this, they nodded! After hearing the prince's explanation, the county magistrate Cen Yan understood the origin of the black stone, and bowed to Zhang Xiao: "Thank you, Your Royal Highness the Prince, for solving the doubts of the people of Lin County!" ”

After Zhang Xiao heard Cen Yan's words, he said with a smile: "This is also something I have heard of, and now it seems that hearing is false, and seeing is believing!" After speaking, Zhang Xiao asked Lecheng: "How is General Lecheng going to deal with this matter?" ”

Le Cheng didn't think much about it and replied: "Since I let the people of Lin County come back, planting in spring and harvesting in autumn, I can't delay the opportunity!" ”

After Zhang Xiao heard Lecheng's words, he secretly thought: Lecheng is also a good county guard who loves the people like a son! However, thinking of his big plan, Zhang Xiao stopped: "The general's idea is good, but Dan has a slight objection to this!" ”

Le Cheng was puzzled when he heard the prince's refusal, and asked tentatively: "Isn't the prince ready to let the people of Linxian come back?" ”

Zhang Xiao heard Lecheng's direct question, and was a little speechless for a while. Looking at the people present, except for Le Cheng and Cen Yan, they were all their own subordinates. Zhang Xiao asked Le Chengdao: "The general knows the method of iron smelting!" ”

Le Cheng heard that the prince did not answer his question directly, but asked himself from another aspect, and he didn't know what the prince was talking about for a while. He replied, "I have heard of it!" ”

When Zhang Xiao heard Lecheng's answer, he motioned for him to continue! Lecheng had no choice but to reply with his scalp: "I heard that when iron-making, the iron and stone were put into the iron-making furnace, and after the smelting of the furnace, they were pulled out and kept building. ”

China's ironmaking began in the Spring and Autumn Period. At that time, the ironmaking method was block ironmaking, that is, at a lower smelting temperature, iron ore was reduced to a solid state to obtain sponge iron, and then forged into iron.

And the real big iron-making was also in the Western Han Dynasty, when the crucible iron-making method appeared. The use of coal has multiplied the number of forged iron tools, and the methods of iron-making are also endless!

After Zhang Xiao heard Lecheng's words, he said: "The method of iron-making that Lecheng said is a piece of iron-making, which is time-consuming and laborious, and often wastes iron ore but has low yield!" ”

After Zhang Xiao said this, Yu Xin, who was accompanying him, heard the door and asked: "His Royal Highness the Prince, is the "coal" a way to change?" ”

As soon as Yu Xin's words came out, everyone present just looked at the prince and waited for the prince's attitude! Zhang Xiao looked at everyone and looked at him, so he nodded and said: "Coal is indeed able to change some of the drawbacks of the current method of block iron smelting!" ”

Le Cheng may not have cared about it before, but when he heard the prince say that coal can change some of the disadvantages of the current iron-making method, it was a light in his eyes. He came with his troops, and he knew that the skilled craftsmen in the army spent a lot of time on ironmaking, but they still consumed iron materials and made little!

And now, God bless Dazhao. Unexpectedly, this thing was born, which can change the current drawbacks of iron-smelting, how can he not be dazzled! Zhang Xiao looked at Lecheng's eyes with a bright light, he had seen such a gaze once in Handan, that time, when he rode for the formation of Zhao Guoxin, Lecheng's eyes were the same as at that time!

Le Cheng hurriedly approached and asked Zhang Xiao: "Your Royal Highness the Prince, I don't know what you said about changing the current iron-making method, how can you change this coal time?" When Lecheng's words came out, it happened that the other people in the same company also wanted to ask, and they all looked at the prince with blank eyes, waiting for his answer!

Zhang Xiao looked at everyone's suspicious eyes on him, and said secretly in his heart: Although I am a liberal arts student, I still know a little bit about basic ironmaking, and I will see that the expert will show you a hand! Zhang Xiao said to everyone: "The main thing in this iron smelting is to control the temperature!" ”

After hearing this, everyone wondered in unison: "Temperature? ”

After hearing this, Zhang Xiao nodded and continued: "Then do you know the temperature difference between this scorched wood and coal? ”

After hearing this, everyone shook their heads in unison! Zhang Xiao continued: "The burning temperature of scorched wood is only 800 to 1,000 degrees, while the burning temperature of coal can reach about 1,800 degrees! It is a method of smelting iron with blocks and scorched wood alone, and the smelting temperature of scorched wood is low, so the iron smelted still has to be continuously forged! ”

After Zhang Xiao's words came out, everyone accepted the impact of the prince's new statement: Is coal really as the prince said? Is it true that the method of smelting iron is due to the low temperature of scorched wood?

While everyone was digesting everything the prince had told everyone, Wei Jia smiled at everyone and said, "His Royal Highness the prince, does your subordinate have a novel idea?" ”

shouted, it was rare for his subordinates to have this realization, Zhang Xiao just couldn't stop it, and immediately encouraged: "Even if you talk about it, let me wait for you to take a closer look!" ”

After Wei Jia heard the prince's words, he immediately walked to Zhang Xiao from behind and said, "What His Royal Highness the Prince said just now, the temperature difference between scorched wood and coal, Wei Jia calculated carefully, and the difference is more than twice as much. Wouldn't it be better for us to make iron twice as long in the future? ”