When Vincennes' cement factory began to expand its production capacity, people everywhere continued to follow the tradition of building civil buildings out of wood and bricks, while more expensive stone was used to build public buildings such as roads, bridges, and city walls.

Even if Vincent knew the meaning of cement, he could not wait to admit that stone buildings were not inferior in quality or appearance, but they were expensive, time-consuming, and not comfortable to live in.

The churches and monasteries of the Church belong to this list, and Vincent's painstaking management is not easy to compare with the wealth of the Church, which is a prostitute and a prostitute, so he can only find another way.

Cement may not be beautiful in itself, but cement is harder and stronger than most traditional building materials, and it is relatively inexpensive to make.

Even a country girl like Ninia was inspired by her own combat experience to connect cement to future warfare and the idea of building a massive cement fortress complex on the border.

"Yes, woman, that sounds like a good idea."

Before Vincent could speak, the silver dragon immediately came over and interjected.

"With your doctor's happy tube, the flesh and blood of the Terran infantry, no amount of it will be possible to break through your defenses." After the silver dragon finished belittling the infantry, he pointed to himself and said, "Of course, if you go to war, then it is a different matter."

Thinking of the terrifying power of the silver dragon before opening the mountain and cracking the rock, Ninia nodded silently, and just as the silver dragon was smug, Vincent suddenly asked.

"Really?"

"Demons, are you serious?" Silver Dragon's vertical pupils suddenly doubled, and she glared at Vincent and asked, "If I had the chance, I would really like to try."

The concrete road, made of a mixture of cement, sand, and stone, was not strong in the face of the dragon's power, but the lord said it on purpose, as if there was a secret weapon.

"The cement fortress she mentioned earlier, I have already built, and this is not a concept, but a reality. If you'd like, you might as well help me with my destructive experiments."

Vincent's words made Ninia extremely excited, and at the same time couldn't help but feel worried—the power of the dragon was neither light nor heavy, and it would be a shame and a waste of gold to destroy the lord's work all at once.

Since she met the demon lord, the girl has seen too many wonderful inventions, Vincent explains to her that these are technological innovations, products that can change the territory of the craftsman, and unlike cement and toys, even Ninia can realize that this is an epoch-making invention.

Such a good thing, directly used to trample on the dragon, is really too tyrannical.

Ninia looked at the lord worriedly, and peeked at the large number of dragons, and her heart was conflicted, and she wanted to stop talking.

"Don't worry, my toy, there's nothing wrong with that, fortresses are built to be destroyed, there is nothing tangible or immortal in the world." Vincent winked at the girl and said calmly, "If the guardian dragon can help, we can find the flaws in the fortress and improve it."

"That's it, it's still the eyes of the demons." The silver dragon wagged its tail triumphantly and walked past Ninia's eyes, "Woman, learn more from him, don't always worry about it."

The lord made his way through the farms and villages outside the city, and unobtrusively, to a remote and deserted village, inaccessible but guarded by undead creatures and soldiers.

If there's one thing that sets it apart from the rest, it's that the terrain is higher and there are even a few low, incoherent hills.

At the foot of the hill at the edge of the village, Ninia saw the fortress of her imagination, but the appearance of the fortress was very different from what she had imagined.

"Roar...... This is what you call cement...... Fortress?" Puzzled, the silver dragon asked, "Why does it look like a bun?"

"That's right, that's it." Vincent replied affirmatively to the dragon, whose mind was full of food and drink, "I built it two months ago, and because I was too short of materials at that time, I built it on the side of the mountain."

"It's not a problem where to fix it, it's going to be demolished soon......

The silver dragon walked over and kicked it unceremoniously, which was an action for Shu

For women, it's really not very elegant, but the power is still unquestionable.

Sure enough, there was a muffled sound from the fortress, and the cement scum on the outside was pouring down, but it did not collapse with a bang or be pierced as Ninia had imagined.

"It didn't take much effort, but this thing was a little hard." The silver dragon was also slightly surprised, "This is much stronger than bricks, and it can be compared to ordinary whole rocks."

The so-called fortress was only about two meters high, and it looked no bigger than the ogre's chest, and its entire appearance was round and unangular, just like the round bread that the silver dragon spoke of.

Almost half of the fortress leaked out on the outside, and half of it blended into the mountain, and it looked so strong that there was no entrance to it, except for three small trapezoidal windows that were closed inward, each with only the width of a human face, and could not enter or exit at all.

In the evening, a ray of setting sun shines on the strange barrier, decorating it with a hint of golden light, and the strange shape adds to its mystery.

"Great dragon, how much power do you use?" Vincent asked tentatively, "If you can, please continue to increase the strength test."

"It seems that Yu was underestimated by the demons, roar," Yinlong's tone was slightly displeased, "Listen to the demons, you damaged your fortress, and you also asked for it, but you will not compensate for any gold coins."

Vincent nodded, not only did he not fear, but instead made a new request.

"I've heard that the Magister of Herod can unleash the Megalithic Star Shower magic to carry out a wide range of attacks on enemy castles, and I think it would be easy for you to imitate this level of catapult strike, and if you could, I'd love to see it."

As he spoke, Vincent spoke a few words of demon language to the fortress, and the voice of a monster sounded inside.

"Simulate the bastion's resistance to blows, and then move on to a fire attack......

Hearing Vincent's request getting more and more outrageous, Ninia couldn't help but sweat for the lord's work, and after witnessing the dragon's violent intensity, she still had a lingering fear about it.

Vincent's words completely ignited the fighting spirit of the silver dragon, and she gladly accepted it.

"Call the magician, and stand by from a safe distance." Vincent instructed the nearby lichs, "This is a rare opportunity, give it your all."

In fact, the so-called safe distance is just a psychological comfort, no one can tell whether the dragon's accuracy is good or not, and the final effect depends entirely on her mood.

A dragon's roar pierced the sky, and the silver dragon lifted huge stones from the nearby hill and threw them at the concrete fortress one after another.

Huge stones fell like meteors near and on the fort, and all the people in the village hid for fear of being hit by the stones that did not have long eyes.