Mobius really wanted Rosen's battery technology, from the west of the city to the dock, and from the dock to the west of the city, he returned to the west of the city. In just half an hour, he carried 3,000 golden dragon coins over.

In the past half an hour, Rosen also wrote down the detailed method of the battery on a piece of parchment.

In fact, his battery is a lead-acid battery with a simple structure. It uses lead dioxide for the positive electrode, lead for the negative electrode, and sulfuric acid for the electrolyte. After writing down all the methods, it consumes less than a piece of parchment paper in total, which costs 5 krones.

In order to take care of Mobius' reading method, Rosen deliberately changed the nouns in it, such as lead dioxide, and he wrote it as lead rust.

When Mobius handed over a large bag of heavy gold dragon coins to Rosen, but only exchanged for a piece of parchment, he was in a mess.

"It's that simple?" Molius didn't believe it. He took the parchment paper and looked around, trying to find more content, but naturally he was disappointed.

Luo Sen asked with a smile: "Don't believe it?"

Mobius was almost crazy. He saved 3,000 gold dragon coins. He had saved up nearly 10 years and changed this piece of paper. Not only did he become a pauper, he also owed the other party 2,000 gold dragon coins. He felt so frustrated that he thought about it.

He had already done something if he wanted to change someone else, but Rosen had Veronica around him.

Taking a deep breath, he looked at Veronica with a sad face: "This kid...he bullies people!"

Veronica also felt it was a bit simple: "Rosen, aren't it too perfunctory? It's 5,000 gold dragon coins at least."

5,000 gold dragon coins, I can buy a super luxury house in Nilo Gard.

Rosen smiled slightly, took a step back, walked to the battery, and waved to Mobius: "Come on, if you don't believe it, let's take a closer look at the appearance of this thunder cage."

As he said that, he opened the lid of the large wooden box.

Mobius looked over and found that there was a layer of transparent glass in the wooden box, which was divided into many small grids, and the grid was stuffed with things. After looking carefully, he turned around and compared the instructions on the parchment paper. The two were exactly the same.

"If you do this, can you really tame lightning?" Mobius felt like seeing a ghost. Lightning is a weapon of a god. It can bind the cage of lightning. It sounds very high-end. The structure is so simple, which is really unbelievable.

"If you don't believe it, pinch these two pieces of iron?"

Mobius really pinched it. As soon as he pinched it, his whole body began to tremble. That unique numbness cannot deceive people.

"Did you believe it?"

"I believe it." Mobius nodded, but was still a little worried.

Seeing him like this, Luo Sen said earnestly: "Don't look at the few words on the parchment, but there is no word on it that is nonsense. Do you think the things on this scroll were obtained out of thin air? No! Let me tell you that behind each word, there are the hard work of several ancestors. In order to build this thunder and lightning cage, I don't know how many ancestors have worked hard and spent their whole life!"

"Ah?" Mobius didn't expect this.

Luo Sen asked loudly: "I will ask you, countless wise ancestors, is the time of life worth 5,000 golden dragon coins?"

"value!"

"Then why are you still feeling aggrieved? Why don't you take the scroll back and build a lightning cage as mentioned above. After making it, no matter if you sell it with electrolytic metal or sell it directly, will it be profitable in minutes for 5,000 gold dragon coins?"

This reminded Mobius, and he patted his head heavily: "Rosen, you are right, thank you very much for reminding me!"

After saying that, Mobius didn't stop for a moment, put away the parchment paper, and ran away as if he had gained a lot of money, as if he was afraid that Rosen would go back on his word.

"Stop!" Luo Sen suddenly shouted.

Mobius stopped by the door, held the scroll tightly in his arms, and looked at Rosen vigilantly: "Why, do you want to regret it?"

Rosen shook his head, and reached into his pocket and took out a milky white crystal. Two metal wires were pulled under the crystal. Rosen connected the metal wires to the poles of the battery, and the milky white crystal suddenly shone brightly.

"Soft Light Crystal?" Mobius's eyes lit up suddenly. Adele's moon wand was circulated to be magical, especially the glowing soft light Crystal, which he had heard of many times.

Luo Sen put away the milky white crystal and smiled and said, "The oil lamp in your warehouse is too dark. If you can pay off the remaining 2,000 gold dragon coins as soon as possible, I will give you this soft light crystal."

Mobius shuddered: "You are serious?!"

"Veronica is here, she testified."

"Okay!" Mobius shouted excitedly: "Wait for me!"

After saying that, he quickly turned around, ran directly from the door to the window, then jumped out of the window, and then ran away all the way.

Veronica watched the whole process and waited for Mobius to flash. She couldn't help but spread her hands: "Why did Mobius become so easy to talk to? Why do I think he is a little stupid?"

"He is not stupid, he is simple, hehe."

Luo Sen carefully packed the golden dragon coins, then took the prepared aluminum powder and magnesium powder, and started to get busy again.

This busyness is almost midnight.

At this time, a total of more than 20 kilograms of aluminum and magnesium powder turned into more than a dozen round dense cardboard bags.

Veronica was originally very curious and wanted to see how Rosen created strong light, but after watching it for a few hours, she didn't understand anything. In the end, she had to go to rest. Luosen was the only one left in the alchemy room.

It was already late at night, and everything was quiet, and there was no movement outside the window.

Luo Sen put away the paper bag, walked to the window, tightened the curtains, leaving no trace of the gap, and only a candle was left. The huge alchemy room suddenly became very dark.

Luo Sen walked to the wall of the alchemy room with a slight hand, squatted down, picked up a piece of magnet ore, and began to observe carefully.

"Iron black, scale-shaped, slightly metallic luster, weak magnetic, indeed ilmen ore!"

For Rosen now, iron is worthless. The valuable thing is titanium, which is the mitral of this world. According to Mobius, this thing is a key element in enhancing the power of the undead.

Although, for an alchemist, no matter how powerful a body is, it can be destroyed by various alchemy means, but if an alchemist and has a powerful body, it would be like a tiger with wings!

Gently break out a small grain of iron-titanium ore with your hands, put it in your mouth, swallow it directly, and activate the alchemy power and carefully observe the ore in the stomach.

"The ilmenite ore has not been absorbed. It seems that the physique of the undead cannot directly absorb the titanium oxide in the ilmenite ore. It is correct to think about it. If it could be absorbed directly, it would not be my turn to do such a good thing, and it would have been eaten up by Mobius long ago."

It doesn't matter if it cannot be absorbed, Rosen can extract the titanium in it before eating it.

This is not a problem for Rosen. The existing materials and tools in the alchemy room alone are enough to extract pure metal titanium.

It’s a lot of dreams about nightclubs, so Luo Sen started to do it directly.

This night is destined to be a sleepless night.

Rosen sweated heavily and used chemical techniques such as pickling, crystallization, cauterization, replacement and other chemical techniques. He worked all night and finally managed to consume 40 nilo pounds of ilmenite ore at around 4 o'clock in the morning. In the end, he obtained 7 kilograms of pure metal titanium powder, which was more than ten times the titanium content in Viken's skull.

If Mobius knew that Rosen had so much mitral in his hand and that the raw materials were sent by him, he would probably vomit blood in anger.

After getting the titanium powder, Rosen swallowed the titanium powder as sugar and bite it.

When he swallowed, he activated the alchemy power again and carefully observed the changes inside his body.

He found that his body now has an amazing efficiency in absorbing pure metal titanium. After eating a spoonful of titanium powder, it was absorbed by the stomach and intestines in less than 5 seconds, and turned into a large amount of titanium ions and swam around the body.

As the titanium ions continued to absorb, Rosen felt a cold breath in his body at the same time. This feeling was similar to the first time he took the moonlight elixir, but there were also slight differences. Compared to that time, the cold breath today was much gentler and made people feel a little comfortable.

It took Rosen half an hour to eat seven kilograms of titanium powder.

After eating, the effect is very obvious.

Rosen discovered that his skull, entire spine, ribs, shoulder blades, and hips had all turned into hard biological titanium alloy.

‘The vampire Viken has lived for at least 100 years, but he has only converted his skull into biological titanium alloy. Mobius’ age should be similar to Viken. Veronica can easily break his leg bones and shoulder bones, which shows that Mobius’s condition is not much better than Viken. In my current situation, I am afraid that the bones of the elder of Blood Rose are not as hard as me.’

Afterwards, Rosen tested his healing ability, nerve reaction speed, and physical strength respectively.

But this time, the test results were not as perverted as he thought.

‘The healing ability has only been slightly improved. It takes more than 15 seconds for the superficial scar healing. The physical strength has been slightly improved, which is much stronger than ordinary people, but it is far inferior to Veronica, which is much worse than Annie. The neural reaction speed has increased significantly. It is estimated that it is faster than Annie, slightly worse than Veronica, but there is no crushing advantage anymore.’

Although his current physical combat power is far inferior to those traditional undead tribes, he is even worse than Mobius. But the advantage is that he is not afraid of silver, has no blood addiction, and his physical protection ability, especially his protection ability to the nervous system is super perverted. At the same time, he is also an alchemist.

"The body with amazing defense, lightning-like reaction, and powerful alchemy equipment are enough!"

Rosen left the alchemy room with satisfaction.

Although he was busy all night, he didn't feel tired at all, but was excited. It was already five o'clock in the morning, so Rosen simply ran to the mansion garden to run and exercise.

His actions shocked the early servants in the mansion.

After running out of sweat, Rosen took a bucket of cold water to rinse his body, and then happened to catch up with the breakfast in the mansion.

During breakfast, Little Alice looked at Rosen carefully and suddenly said, "Brother, you seem to have become stronger."

Sister Mary also said, "I have become stronger and have grown taller."

Veronica also felt that Rosen seemed to have changed, but when she looked closely, she could not tell anything wrong except that she had become taller and stronger, so she could only say: "You look in good spirits."

Luo Sen felt secretly happy and didn't explain. He just ate wheat porridge in big mouthfuls.

While eating, a servant hurriedly ran in and said a few words to the butler Afu who was standing beside him. The butler Afu's face changed slightly, and he walked up again, and whispered in Rosen's ear: "Sir, a visitor is coming from outside the door. One man and one woman, the one is the intern magician Miss Hill, and the man claims to be a mathematician Vic."

"Mathematician, Vic?" Rosen smiled playfully.

"Yes, this Mr. Vic seems to be very excited."
Chapter completed!