In a corner of the southern part of the continent, the demon lord is relying on his wisdom and pattern to develop into a low-key and powerful faction.

After defeating the invasion of the Kingdom of Herodes, the security of the territory was temporarily guaranteed - the Herodians had to admit that if they wanted to destroy the small territory, they could only fight big, not small.

It is impossible for the large-scale mobilization at the kingdom level not to attract people's attention, and once there is a mobilization of nobles and civilians in various territories, it is impossible to hide from the eyes of the demons.

Maybe that day will come sooner or later, everyone knows this, so Vincent must take precautions and leave a foundation for the territory to attack and retreat.

If he wants to control the territory for a long time under the threat of a great power, it is not enough to rely on traditional demon magic and summoning skills, so he decided to point out a special technology.

With the help of the gods' craftsmen, Vincent used his known knowledge of materials science to combine technology and magic in production technology to finally create cement that could be mass-produced.

"This is cement?" Ninia had heard the word before, but it was the first time she had seen it in person, so she was surprised, "I thought it was a wet material."

"Cement is just powdery material, wet with processed concrete," Vincent patiently explained, "You see, this ground is made of cement."

Ninia and the silver dragon realized that the rough and flat ground under their feet was not made of ordinary materials.

I saw that the cold gray ground in front of the workshop was square, stretching out in all directions, and it looked very flat, but if you looked closely, you could see that there were subtle cracks and small potholes on it, and in the sunlight, the ground reflected a strange luster, which made Ninia can't help but squint her eyes.

The hardness of the concrete floor was also surprising, Ninia couldn't help but stomp on the ground a few times, the hard feedback made her realize that the ground was stronger than any patchwork surface, so she bent down again and touched the wet and cold ground with her fingers, the touch that resembled a whole boulder that she will never forget.

The silver dragon did not be curious to touch, but subconsciously sniffed, and the air on the concrete floor was filled with a faint smell of mud, which was indescribably unique.

This whole man-made scene is simple and monotonous, at odds with the grass and trees in the distance, but full of incredible charm.

Cement, a seemingly ordinary material, is absolutely inconceivable in the other world, and even dragons with ancient wisdom find it difficult to express an opinion on it.

"This ash is so fine and soft, how did it become such a hard ground?" Ninia was shocked, "Is this magic?"

The silver dragon looked very reserved and did not speak, but Vincent could see the curiosity on her face that could not be concealed.

"That's a good question...... Cement is a very useful man-made material that can be used to make components such as walls, floors, houses, etc., if we need it, and can also be used to build roads directly. The use of cement makes buildings more durable, cheap, and can be built quickly and in large quantities."

"The raw materials for making cement are all kinds of limestone, clay and other additives, and we can find all the raw materials in the territory, and we can also let merchants sell them from abroad."

"The method of making cement is not complicated, it just needs to mix limestone and clay together, add the right amount of water, and then fire it at high temperatures. During the firing process, the minerals in the limestone and clay are combined to form a new material, cement, which can then be solidified into this solid substance by adding water and sand."

"Now that you two should have understood the production methods and uses of cement, what we need to do is to produce cement in large quantities in our territory." The lord smiled and said, "If you want to build a road and a house with cement, you need a lot of materials."

This kind of introduction is vague, similar to the introduction when taking the leader to visit, and does not need specific substantive content, as long as people understand the basic situation of the product.

The concrete floor under the silver dragon's feet creaked, and when Vincent looked over, the ground had been cracked and sunk by her force, and Vincent didn't even blink his eyes at this impolite gesture, as if he hadn't seen it.

That's what she did on purpose, except for this

Vincent's was nothing at all.

If it weren't for that, Vincent wouldn't have found an opportunity to demonstrate the virtues of cement.

"It's so rude! How can you do that?" Ninia screamed angrily, "What a shame such a good ground has been broken!"

"Go, go, the master is not in a hurry, what is the slave in a hurry? Demons, now that the ground is broken, what will you do?" The silver dragon asked Vincent nonchalantly, "It doesn't matter if the road is cracked, if the wall is cracked, it won't be fun."

"It doesn't matter, this little thing, anytime, anywhere, you can fix it if you want." Vincent replied unconcernedly, "In a few days it will be back to new place, and it won't cost a few dollars."

Looking at Vincent's expression, Ninia knew that the lord was not posturing, but sure of it. Under the insistence and entanglement of Yinlong, Vincent had to make a cameo appearance as a plasterer in front of the two girls to practice the use of cement.

After preparing the cement powder, sand, stones, and water, Vincent put the cement and sand in a mixing bucket according to the ratio that only he knew, and then kept adding water to let the professional skeleton mix the contents into cement mortar.

"If you need a large amount, you can also use a blender, this equipment has been made by our dwarven friends, it is powered by magic stones, it is better than human mixing, and it saves time." "Look, the mixture is homogeneous, fluid, and malleable, and it has to be stirred to the point where there is no dry powder and no large particles."

Next, Vincent moved the mixed material near the broken pavement, allowing the skeleton to pull the rope around the area to be repaired and prevent people from entering it by mistake.

"In this way, use mortar to repair the damaged area, fill it in, and then use this scraper and scraper to press and level it," Vincent did not use magic, but skillfully demonstrated with tools under the watchful eyes of the craftsmen, "When leveling, be careful to make the repaired part flush with the surrounding seams, and then use a brush to finely smooth the ......

"You have to play too!" The silver dragon shouted, "How does that feel, and what happens if you put your hand in it?"

It won't be good for you, Vincent said in his heart, but he patiently admonished people to be careful not to let their bodies come into contact with the cement too much.

"After the repair is completed, pay attention to humidification and maintenance to avoid the cement being too dry and cracked," Vincent glanced at the silver dragon who was curiously playing with mud, and motioned for people to disperse their work, "How is it, my toy, what do you think of this new material?"

Ninia had been looking down at the wet cement mortar, and when she heard Vincent's words, she looked up at the lord, her expression still resolute and serious, but her eyes were full of tenderness and eagerness.

"Build concrete roads all over your territory, build multiple concrete forts along the enemy's paths, and place our new weapons inside, and you can make the battlefield a place for your enemies." Ninia said seriously, "So that the tragedy in our village will not be repeated."