Female-to-male: I live on farming

Lu Youqing took up his post after resting for a few days. Qin Ke would send him to the government office every day and then go to the Ministry of Works to supervise the production of cement.

The ingredients of cement require water-quenched slag, which is the waste slag from the iron-making furnace directly placed in a cold water pool for quenching, as well as the residue left after burning coal.

The latter is easy to deal with, but the former would be difficult to supply in large quantities, after all, ironware is strictly controlled by the imperial court.

However, it is currently only in the experimental stage and the required amount is not much.

Other clay bricks, various pottery fragments, etc. can be seen everywhere, mixed with quicklime, etc.

The reason why cement has not been successfully produced is because of the proportions of these ingredients. Although there are formulas given by the system, the impurity content is complex, so it is necessary to constantly experiment and change the proportions.

It was not until December that the Ministry of Industry finally worked out the most successful mix of cement. That day, Qin Ke excitedly dragged Lu Youqing to see his results.

Lu Youqing already knew what Qin Ke had been researching recently, and seeing his expression, he could guess that he must have succeeded.

People from the Ministry of Industry have moved the cement to the courtyard, which has a wide view and good light, making it more suitable for observation and convenient for everyone to test and evaluate it.

I saw that a square area was specially marked out in the courtyard and covered with cement. The color and material were obviously different from the ground next to it.

"Is that what's paved on top cement?" Although Lu Youqing had never seen it before, she had heard of Qin Ke's idea.

The main function of cement is to pave roads.

"Yes," Qin Ke stretched out his hand to her, "Come, I'll show you how to feel it."

Qin Ke took her hand and led her to step on the cement floor. The cement floor had been completely dry after being dried in the sun and was hard enough.

Lu Youqing felt the touch of the soles of his feet and said, "This cement floor is flat and smooth. It is safe to walk on it even on rainy days."

"Yes, it has good waterproof properties and is not easily affected by moisture or water seepage. This is the biggest advantage of cement. In addition, it is hard and durable, and can withstand greater pressure and weight. It is not easy to be damaged or deformed. It can withstand any weight of the carriage."

And cement floors are relatively low-maintenance, requiring only regular cleaning and minor repairs to keep them in good condition.

Lu Youqing nodded, and his eyes slowly fell on the almost one-meter-high wall on the other side. This wall was specially built a few days ago, and the surface of the wall was also covered with cement.

"that is?"

"Oh, we covered the wall with a layer of cement, which can increase the wall's strength and extend the building's service life." Qin Ke gently took Lu Youqing's hand and led her to the pile of cement. He gently guided her hand and gently placed it on the cement, allowing her to feel the rough and hard texture.

Lu Youqing frowned slightly, carefully feeling the touch of the cement, and asked, "Have you ever tested the strength of the cement wall?"

"Ma'am, do you have any ideas?"

Lu Youqing lowered his eyes and pondered for a few breaths before suggesting, "Why not go get some weapons and try it out?"

weapon?

Qin Ke guessed Lu Youqing's intention, thought about it, and simply sent someone to the military camp to invite Xiao Anyi.

It happened that Xiao Anyi had nothing to do today, and soon he came with a group of people, among whom was Li Nanqiao. She was wearing thick armor made of iron sheets or leather, which was strong and heavy.

Xiao Anyi jumped off his horse, walked quickly to Qin Ke, and asked, "What's the matter?"

"I have a new thing that I want you to help experiment with." Qin Ke pointed to a wall in front of them and said, "I want you to use your military's methods to destroy this wall."

Xiao Anyi didn't waste any more time and stretched out his hand to order his men to start.

The men who followed her first took the bow and arrow from the horse's back, drew the bow and put the arrow on it. The area of ​​the wall was very large, so there was no need to aim at all, and they could just release the string.

"Ding…"

The sharp arrow hit the wall and fell directly to the ground.

Xiao Anyi frowned and took two steps forward to check. Qin Ke and Lu Youqing followed curiously.

The arrow only left a tiny scratch on the concrete wall, and no damage was seen.

Xiao Anyi bent down and picked up the fallen arrow from the ground, only to see that the originally sharp arrowhead had become a little blunt.

She knew the power of the arrow her subordinate had just shot. He was very close to the target when he shot the arrow. The closer the distance, the greater the power. At that distance just now, the arrow was powerful enough to penetrate a human body, but it only left a slight scratch on the wall.

"What is this?" Xiao Anyi became curious and his fingers unconsciously stroked the smooth and hard wall.

"This is the new cement developed by the Ministry of Industry. General Xiao, please continue to try it." Qin Ke kept it a secret and took Lu Youqing back a few steps to leave them enough space.

"Han Cheng, come on, use all your skills." Xiao Anyi waved his hand.

Han Cheng was a man of unparalleled bravery and immense strength. He charged into the private army camp alone, and with his spear, blood and flesh flew everywhere. His skills were among the best in the army.

Han Cheng immediately drew the sword from his waist. Qin Ke wanted to say something but stopped himself, feeling a little sorry for the other person's sword. However, he had already stepped forward and chopped down the concrete wall with his sword.

Sparks flew everywhere.

Han Cheng felt his arm go numb, and his hand holding the sword trembled. He stared at the concrete wall in front of him with wide eyes, and said in an exaggerated tone: "General, this thing is very solid."

He was only half a meter away from the concrete wall, so he could clearly see that after he had chopped it with his knife, there was only a dent on the concrete wall.

You have to know that he just used all his strength.

Qin Ke rubbed his ears unconsciously. The sound of the knife hitting the cement was not very pleasant. Fortunately, he had just pulled Lu Youqing away.

Seeing the exaggerated expressions of surprise on their faces, Qin Ke puffed out his chest, feeling very proud.

If I had known earlier that the load-bearing walls of high-rise buildings in later generations were all made of cement, it would take a lot of effort to break them even with a sledgehammer.

At this time, Lu Youqing took a few steps forward and stood almost shoulder to shoulder with Xiao Anyi. They both looked at the concrete wall that stood there intact, and no one spoke for a while.

"Do you think this thing can be used on the city wall?" Lu Youqing broke the quiet atmosphere between the two of them first.

Xiao Anyi unconsciously put his hand on the hilt of the sword on his waist and said in a deep voice: "If we use this to build a city wall, even ten times the number of troops will have difficulty breaking through the city."

"Qin Ke." Lu Youqing waved at Qin Ke, who was observing the slightly bent blade of the broadsword with Han Cheng and others.

Qin Ke, who originally wanted to touch the blade, heard his wife calling him, and quickly withdrew his hand and ran over.

"What's the matter, madam?"