Wu Yanzhi's mouth was hundreds of thousands of catties, but it jumped everyone! When he saw everyone's surprised expressions, he secretly laughed in his heart: hundreds of thousands of catties, or did he say less, didn't Xue Jichang say last time that the country produces nearly two million catties of copper a year? This thing can all be used for refining.

You know, there is a lot more zinc than copper on Earth. It is the current smelting technology, and it is easy to produce 10 million catties of zinc a year.

In this way, the country produces more than 2 million catties of brass a year, is it not a gesture?

That Nine Heavens Dao Leader's expression was extremely unnatural, he had said a month ago that Wu Yanzhi definitely didn't understand the refining of the dragon.

He asked, "What is this zinc?" How to smelt? ”

"This zinc is actually similar to copper, but the smelting method is different. It is necessary to process special smelting tools, but it is slightly complicated, and I can't understand it for a while. When you have time another day, you will communicate with the Taoist leader in the later life! "The Way of Martial Arts.

As long as the government's metallurgical supervisors master this technology, this technology will soon be leaked, and the price of the hammer will soon be close to bronze, and there is no need to hide it more.

"That's good! Poor Dao wants to ask Wu Lang for more advice. Come, the poor road has eyes and does not know the masters, I salute Wulang for a cup! The Nine Heavens Daoist raised his glass and took the initiative to toast.

"The Taoist is polite!" Wu Yanzhi raised his head and dried it up.

At this time, Xue Jichang, who was shocked by Wu Yanzhi's words, suddenly came back to his senses! He asked: "Wu Lang said just now that he also learned some copper and iron techniques, could it be that Wu Lang also has the secret book of copper smelting and iron smelting?" ”

Wu Yanzhi waited for this sentence for a long time, and he said lightly: "Actually, the smelting of copper, iron, and steel is even simpler!" It's not a late-life boast, it's easy to smelt copper with the method of late-life, and it's easy to produce three or five million catties a year!

As for the steelmaking method, the current steel-filling method is very outdated, time-consuming and labor-intensive. If you use the method of late birth, it is not a problem to increase the steel output by a hundred times and a thousand times a year! ”

Wu Yanzhi knew that at this time, pig iron was easy to refine, but steel was difficult to refine, mainly because how to remove the carbon and sulfur in the iron was still a problem.

When there is more charcoal, pig iron becomes wrought iron, not steel. If there is more charcoal, it is still pig iron.

As soon as everyone heard Wu Yanzhi's understatement, they said that they could double the copper output and increase the steel output by a hundred or a thousand times, and they were all shocked! However, almost no one doubted it! Because of this big bag of copper coins and the two pounds of coins, all people saw it.

"Oops! Wu Lang is really a genius, tomorrow morning, the contemptible people will play the God Emperor and recommend Wu Lang to the God Emperor. Now Wu Sansi is raising copper, tin, and pewter to cast Jiuding, and a talent like Wu Lang is thirsty for talent! Xue Jichang said.

His face glowed red, and the haze of being abused by Wu Yanzhi while playing chess just now had already flown out of the clouds. It seems that he himself invented a new method of smelting copper and iron.

In fact, everyone didn't know that during the recent court meeting, Wu Zetian re-proposed that he should recommend people who could increase copper and iron. Officials who come forward to recommend should also be promoted and rewarded.

This Wu Yanzhi actually opened such a big mouth, and he has a real thing, he must be really talented. Of course, he had to take this opportunity to report to the emperor in order to be promoted.

Because everyone knows that as long as Wu Zetian is happy and gives people an official and a knight, he will never feel distressed. It is not uncommon for a seventh- or eighth-grade official to ascend to a fourth- or fifth-grade position overnight.

Wu Yanzhi said indifferently: "Then thank you Xue Gong!" ”

The two of them, the Nine Heavens Dao Leader and the Qingxu Master, attached more importance to Wu Yanzhi and were busy toasting! Wu Yanzhi seemed to be fine, but he was very calm.

……

After lunch, the Nine Heavens Dao Leader couldn't help but want to play a game with Wu Yanzhi to see how powerful it was.

After Wu Yanzhi took the initiative to set up the four seats, he still took the lead as a junior in a low-key manner.

First-hand, he casually ordered a son on the side. This Tianyuan, let it be given to the Nine Heavens Dao Chief!

Everyone gathered around to see the master's game.

Who knew that it was another seven or eight subordinates, but the Nine Heavens Dao Leader was the same as Xue Jichang, and he was a little at a loss.

Xue Jichang saw that this martial arts move was unpredictable, but this opening was completely different from when he played against himself in the morning.

Playing chess in the morning, Wu Yanzhi is fighting hard in the middle of the abdomen. Now he has taken the initiative to give up the mid-abdomen and operate the corners.

He knew that in the morning chess, Wu Yanzhi learned the tricks of Go master Wu Qingyuan, and he was eclectic. This afternoon's chess, but it was the "Z national stream" that he used that he had slightly changed himself!

Because there are already four seats on the chessboard, the traditional "Z national stream" is no longer very effective, and its playing method is also very different.

Approaching more than 90 hands, the dragon of Jiuxiao Dao was trapped by Wu Yanzhi, and he couldn't survive, so he had to admit defeat.

Xue Jichang saw that the strength of this martial artist was far above himself and the Nine Heavens Dao Master, even if he was in charge, he might not be an opponent.

However, he is a man who is fascinated by Go after all. After the Nine Heavens Daoist admitted defeat, he had to play another game against Wu Yanzhi. This time, he modestly picked up the sunspot!

"Xue Gong! How does this work? Wu Yanzhi said busily.

"Hey! Wu Lang's chess skills are world-famous, Xue should want Wu Lang to learn, and it is natural to be black! ”

He saw that Xue Jichang had to insist on holding the black first, and he was not reluctant. So he picked up Baizi and got up with Xue Jichang again.

After two games in a row, Yan Zhi only won by three ways.

The Nine Heavens Dao Leader saw that Wu Yanzhi had not done his best, and gave Xue Jichang a lot of face.

............................................ Dividing line ........................................

Here I want to introduce the difference between pig iron, steel, and wrought iron, because many readers don't understand it very well.

Pig iron: It is an iron-carbon alloy with a carbon content of more than 2%, and contains C (carbon), Si (silicon), Mn (manganese), S (sulfur), P (phosphorus) and other elements, and is a primary product directly smelted from iron ore.

Pig iron is very hard and brittle in nature, so it has a single use. For example, the iron pot is pig iron. Of course, at this time, the iron pot was hardly used. One is that it is too expensive, and the other is that people are not used to stir-frying.

Wrought iron: Iron made from refined pig iron. The carbon content is less than 0.02%, also known as wrought iron and pure iron. Wrought iron is very soft, plastic, malleable, can be drawn into wire, and has low strength and hardness. When the charcoal in the pig iron is removed, the pig iron naturally becomes wrought iron.

The common iron wire is wrought iron, which is very soft.

Steel: is a general term for iron-carbon alloys with a mass percentage of carbon content between 0.02% and 2.11%. There are very few elements such as Mn (manganese), S (sulfur), and P (phosphorus) in it. Of course, the composition of Si (silicon) and Mn (manganese) can be increased to become a special kind of steel.

Steel also has considerable toughness compared to iron, and it is used in a wide range of applications.

In simple terms, the carbon content determines the hardness of steel. Therefore, the use of steel will be greater, such as swords, armor and other steel products.

Steelmaking in ancient times has always been a big problem, mainly because it is impossible to control the carbon content in iron. At that time, the difference between steel and iron was not known, and it was mainly a matter of decarbonization. Therefore, at this time, pig iron and wrought iron are very easy to smelt, and steel is not very easy to smelt.

Of course, sulfur is still a big problem, and steel with more sulfur will become brittle.