After occupying Guangzhou City for a month, Xuan Zheng, the master of the Sanyuan Temple, suddenly found that his quality of life had dropped a lot, and he was not the only one who felt this way, as well as Yuan Fang and other four elders with martial arts as high as the fourth order, and even Qin Rigang and the Exterminator Shi Tai and other highly respected martial arts people.

"We're burning here and there every day, when will it be a head? Xuan Zheng rested for half an hour, and felt that the true qi in his body began to recover, but the feeling of being burned dry by the flames all over his body could not be shaken off, and he couldn't help complaining.

"That's right, I've only been concerned about practicing the Earth System Dao during this time, and the cultivation of other martial arts has been delayed, so I'm afraid that if the martial arts continue like this, I won't advance but retreat." Yuan Fang couldn't help but say on the side.

The other elders and Qin Rigang and the others all chimed in together, feeling that this period of time was simply not a human life.

Li Xian listened for a long time, and finally stood up and said a fair word: "Don't complain, everyone, if you have this time, you should seize the time to recover your skills, so that the following experiments can save some effort." ”

This was supposed to be a fair word, but I didn't expect that as soon as I said it, it immediately caused everyone to roll their eyes.

At this time, a craftsman came over and handed Li Xian a pot-shaped thing.

Li Xian took it, drove the true qi in his body, and slowly immersed it into the pottery pot-shaped thing.

Originally, a martial artist could cultivate his true qi when he entered the second order, which was attached to the weapon and could be used to exert a lot of wonders when fighting.

Li Xian has an earth-based Dao species, so he can go one step further and directly immerse his true qi into the object, explore the material composition that makes up the object, and distinguish the physical properties such as the compactness of the object, which is a very practical ability.

"This pot is well done, the particles inside are uniform and fine, the connection is compact, and it is considered a medium to high-grade pot. Li Xian nodded, and carefully filled in the results he had checked with his true qi on the paper he had prepared in advance.

Yuan Fang next to him took the pot, also injected it with true qi to explore, and then nodded: "That's right, I seconded it." ”

"Seconded. ”

"Seconded. ”

"Seconded"

The other three fourth-order elders who majored in the Earth System Dao Method also checked it out, and then said their firm results.

Now that the appraisal of the pot is over, it's time to get down to business.

Li Xian picked up the paper in his hand and read:

"Experiment C871: Graphite crucible smelting method for machine tool steel

Experiment host: Li Xian fire controller: Xuanzheng pot protector: Yuan Fang, Yuan Zhen, Yuan Ling

Crucible maker: Tao Da Niu

Purpose: The purpose of this experiment is to use the monk's black technology ability to make the knife steel materials required for cutting wrought iron barrels, so as to explore the way to make knife steel by ordinary methods.

Experimental materials: carburized iron bars and scrap steel...

......”

Li Xian took the paper that recorded the content of the experiment and read it aloud, and Xuan Zheng couldn't help but shake his head after listening: "You have to re-read this content before every experiment, aren't you annoyed?"

"Annoying, but this is the rule, so reading can make everyone more familiar with the content of the experiment, and it can also reduce the probability of errors in the experiment, so why not. Li Xian said nonchalantly.

The corners of Xuanzheng's mouth twitched, but he didn't speak anymore.

At this time, Li Xian, Xuan Zheng, and the four elders had a stove made of refractory clay in front of them, and a stove shelf was placed in the middle to place the graphite crucible.

Li Xian took the carburized iron bars and scrap steel fragments needed for the experiment, carefully placed them in the graphite crucible, then sealed the crucible mouth with refractory clay, and then placed the crucible on the stove shelf with a special iron tool.

The graphite crucible is then calcined by igniting the special coke that has been placed in the furnace for a long time.

The outside of the furnace is actually connected to the steam engine blower, which blows vigorously after a while, so that the flame temperature in the furnace rises rapidly.

Li Xian stared at the furnace fire intently, and with a finger in his hand, a red true qi was thrown from his hand into the burning furnace, all the way to the graphite crucible.

"The temperature of the flame is seven hundred degrees... Eight hundred degrees... Nine hundred degrees... 1100 degrees... 1,200 degrees... 1,250 degrees... 1,280 degrees..."Li Xian reported loudly while using the special ability of fire-based true qi to probe the temperature of the flames in the furnace.

However, this stove is relatively simple, and it is not possible to raise the temperature all at once, and when it reaches about 1,300 degrees, the temperature stabilizes and does not rise.

Li Xian took out his pocket watch, recorded the time it took to heat up, and then nodded to Xuan Zheng, who was waiting by the side.

Xuan Zheng immediately made a move, and a red ball of innate fire true qi was thrown into the furnace fire, and the color of the flame became even more blue, and the temperature of the flame continued to increase.

Li Xian used his own true qi to perceive, and naturally felt it more accurately: "One thousand three hundred and fifty degrees... 1,400 degrees... Fifteen hundred degrees... Fifteen hundred and fifty degrees... 1,600 degrees..."

After the temperature of the flame rose to 1,600 degrees, Xuan Zheng actually had some strength left, but Li Xian signaled to Xuan Zheng with his eyes, asking him not to continue to push the temperature up, but to control the temperature around 1,600 degrees.

At this time, the four elders led by Yuan Fang stepped forward and protected the crucible with yellow earth-based true qi, lest the graphite crucible could not support it in the high temperature and disintegrate.

After calcining like this for a while, everyone present suddenly moved, but they all felt that the iron bars in the crucible had all turned into liquid molten steel, which was useful.

Li Xian recorded the time taken for calcination, and then stepped forward with a sturdy blacksmith to remove the graphite crucible from the furnace with special furniture, and immediately someone came and poked a hole in the clay that sealed the mouth of the crucible.

Then, together with the blacksmith, Li Xian poured the molten iron into a special mold.

"It seems that this molten steel is in good condition. "Several people present have refined hundreds of furnaces of molten steel, and their eyes have been trained, and they know that the steel smelted this time should be good just by looking at this color.

However, the steelmaking was only half completed at this stage, and after the molten steel solidified, Li Xian followed the blacksmiths to quench and cool the steel blocks with whale oil and other things according to the specified scheme, and finally obtained about forty or fifty kilograms of trapezoidal steel blocks.

When the steel block was fully formed and cooled, Xuan Zheng, who had been watching for a long time, hurriedly stepped forward, and also threw himself into the steel block with his own true qi, turned around, and nodded with satisfaction: "High-quality steel can be used as knife steel." ”

"Great, this time it didn't work in vain. The crowd cheered.

"This is still the first step, and it will be necessary to standardize and universalize this steelmaking step in the future, so that ordinary blacksmiths can also produce this special steel. Li Xian was also very happy in his heart, but he did not forget to ask everyone.