Qin Huan took the red warbler to the sunset, and then he went back to Nanzhao county with two oil lamps made of glass.

"Xianggong, are you finished here? When shall we go back to Xiangyang? "

In the bedroom, the red warbler asked while playing with the glass lamp on the table.

The oil lamp is divided into two types. One is similar to the horse lamp in the previous life. It can control the size of the fire, or swing left and right. It is suitable to hang at the door of the house, or inside and outside the carriage. It is also convenient to carry it on the road at night.

The other one is much simpler, that is, a ceramic base and a glass cover. The top is not sealed. When you want to use it, take away the cover and light it, and then put the cover on it. It is suitable to be placed on the desk at night for close lighting.

Qin Huan saw that she was like a child. She blew hard at the wick across the colored glass. Her face turned red. It was funny.

"It's almost over here. I've ordered the follow-up construction, but I'm going to go to Xichuan tomorrow."

"Then I'll go with you." The red warbler immediately raised her head and said, looking forward to it.

"Well! Then let's go together. "

"Well, don't blow it. If you have this strength, you might as well stay and serve the minister later."

Qin Huan nodded. Seeing that she was going to blow again with her cheeks bulging, he came behind her, held her shoulders and said with a bad smile.

Obviously, the red warbler understood what he meant. Suddenly, her cheeks were red and bleeding, and she beat him hard.

Qin Huan couldn't wait to pull her up and drag her to the bed. It was obvious that he had been a monk for two months. King Qin couldn't smell the meat.

……

"Your Majesty, didn't it just rain yesterday? It's usually very clean. " Er Zhu lowered his head and explained in a low voice.

"You know it's raining, too? If you manage in good order, you won't be like this even if it rains again. Forget it, I'd better take care of it myself and let you see what standard operation is. "

Qin Huan scolded for a while. Finally, he had to wave his hand and planned to stay here for a few days.

But who ever thought that after just staying for three days, King Qin fled to the iron mine with black paint all over, and the red warbler ran away that day.

Because even the rivers in the valley are black.

In the past three days, Qin Huan did one thing, that is, he built hundreds of toilets, which stipulated that he could not urinate anywhere. No one could control other aspects.

So he plans to use the mine as a place for officials to exile in the future, and catch some prisoners to dig coal. As for more than a dozen ladies and hundreds of servant girls, they can only take turns for the time being.

If you stay in this environment for a long time, you have to peel off your skin if you don't die.

Although there are more people in the mines 40 miles away, the situation is much better. There are more than 100 earth kilns making iron, and more earth kilns are being built.

Iron ore is similar to coal mine. It is also an open-pit mine. Therefore, a piece work system of three people is adopted. Young men are responsible for mining and transporting ore, and strong women are responsible for cleaning, selecting and crushing ore.

In order to reduce transportation, the earth kiln for ironmaking is located by the river at the foot of the mountain. The knocking sound can be heard from a distance, and countless blacksmiths sweat in the straw shed.

Ten thousand blacksmiths and apprentices.

These people first beat the pig iron into long wrought iron bars, then pour the freshly baked pig iron water on them for secondary dissolution, forge and remove impurities after slightly cooling, and finally quench it with urine to turn it into steel.

This is the steel pouring method, but to Qin Huan, a modern man, it is time-consuming, labor-consuming and extremely complex.

But compared with the steel frying method, this is countless times better.

Indeed, the daily output of iron and steel produced by 100000 people has reached 200000 kg, including 100000 kg of wrought iron, 10000 kg of steel and 90000 kg of pig iron.

A month adds up to six million kilograms of steel output, a total of 3000 tons, more than 30000 tons a year, which has exceeded the steel output of Daming in one year.

Moreover, the number of earth kilns is not enough, and a large number of iron ores are piled up in time for smelting, otherwise the output will definitely increase several times.

"Is there no better way to get steel?"

Looking at the old masters, Qin Huan asked helplessly. He really didn't know much about steelmaking.

However, he knew that even if the blast furnace for ironmaking was brought out, it could directly produce wrought iron in large quantities, but it had little effect on steelmaking.

"Back to the king, I heard that there was a simpler way to directly integrate pig iron and cooked iron into steel in Jiangnan."

"Oh? Do you know the specific method? " Qin Huan was very happy. If pig iron and cooked iron could be directly integrated into steel, the efficiency would definitely be increased by more than ten times.

"Your Majesty, how can the little old man know this secret? The little old man only heard his father talk about it when he was young." The old fellow was embarrassed.

"And you? Does anyone know a simpler way? If you know it, say it. Once it can greatly provide the benefits of steelmaking, the king will not only reward 10000 liang of silver and two beauties, but also make him an official. "

Qin Huan was disappointed. Then he looked at the others and saw that they were silent, so he gritted his teeth and said.

"Your Majesty, I have a secret recipe..."

"King, there are small ones..."

"King..."

Hundreds of old fellow blacksmiths suddenly drew a breath of air. One eye was straight, and suddenly they jumped out of hundreds of people, pushing forward desperately, and the scene was chaotic.