After receiving the deposit, X took out three test tubes and walked towards the basement.

He opened the heavy iron door and walked into a stinking cell. He pulled out a silver dagger from his boots and cut the wrists of three vampires who were tied to the wall with thick steel chains one by one.

The three vampires screamed in pain.

Wisps of black smoke came out of their wrists, as if they had been burned by a branding iron.

If the dagger had cut their hearts instead of their wrists, the consequences could be imagined.

It’s a pity that nineteen years have passed, and the records that the silver dagger can kill vampires have long disappeared from the Internet. The new generation of young people have no idea about the weaknesses of vampires, and silver products are completely unavailable on the market.

All the major silver mines were blown up and buried deep underground, and the few silver mines that were not blown up were heavily guarded.

There is no way the ruling vampires would allow such a dangerous metal to fall into human hands.

X's dagger has been used for many years and the blade is badly worn.

He withdrew the dagger with a grin, looking extremely distressed, and then randomly collected some black and smelly blood in a test tube.

"You gave too much." A tall woman in leather jacket and leather pants walked into the dungeon and said with a frown.

"Whatever. How would I know how much ten milliliters is?" X waved his hand impatiently.

He was in his sixties, but very strong. He was wearing a dirty jacket and jeans. He had not shaved his beard for many years, which covered most of his face. His voice was as rough as a broken bellows, buzzing in the cramped cell.

The three vampires twisted their bodies and howled, their eyes filled with fear when they looked at X.

"It stinks! Get out." The woman covered her nose in disgust.

X put the lid on the test tube and wiped the blood off the outside with his dirty sleeve before walking out of the dungeon. He closed the heavy iron door and locked it one after another.

The woman leaned against the wall and asked, "Where should the goods be delivered? Do we need to track the buyer?"

"Deliver it to the rooftop of XX Building at 12:00 tonight. Put it in a palm-sized iron box and place it on top of the lightning tower." X put nine locks on the door and thought for a moment before saying, "Let's follow it. This business is very unusual."

"Vampire blood won't turn anyone into a vampire. What are you worried about? The buyer is stupid and has a lot of money, so let him be." The woman sneered indifferently.

"This buyer is very special. He said he would kill Okar and everyone around him on the night of the blood moon." X showed a thoughtful expression.

"Huh?" The woman was stunned for a moment, then shook her head in denial. "Forget it, this is another lunatic. He wants to kill hundreds of high-level vampires by buying a few drops of blood? Is he talking nonsense?"

"In this world, humans only have three paths to choose from: the first, selling out their compatriots in exchange for an Embrace; the second, serving as food for vampires; and the third, risking their lives for a future. Which of these three paths would you choose? Becoming a monster, a pig or a dog, or a madman, which one is better?" X asked slowly.

The sneer on the woman's face slowly faded, and her eyes flashed with deep hatred. Finally, she lowered her head and said through gritted teeth, "I am willing to be a lunatic."

"Then go deliver the goods. Be careful on the road." X put the three test tubes into a palm-sized iron box.

The woman carefully put the box into her backpack and left the basement.

After going out, there is a huge slum outside. People who have lost their jobs due to the serious economic recession have all moved in. They drink the dirtiest water, eat the worst food, and live in the most dilapidated houses, but they live in peace and contentment.

Because their poor lives give their blood a bad smell, high-level vampires will not drink their blood at all.

Low-level vampires often come here to hunt, but their bodies have not been transformed by Le Qinglan's blood and they are afraid of sunlight, so they only come to attack at night.

After nightfall, residents of the slums will spontaneously form ten patrol teams to patrol the area. If they see any suspicious figures, they will chase them with drums and gongs.

The higher vampires didn't care about the lives of lower vampires, so once they were captured by humans and locked up until dawn, they would be burned to death by the rising sun. Over time, even the lower vampires didn't dare to come here.

After the leather-clad woman left in a hurry, X returned to the first floor to wash his hands and wiped his beard with water. Then he climbed up to the second floor and walked into the most spacious room.

"How is he today?" X tried his best to lower his loud voice.

"It's still the same." A woman in a white dress put down the hardcover book she was reading halfway and stood up from the rocking chair.

She walked towards the large bed in the middle of the room, lifted the head of the tall man lying on the bed, showing the back of his neck, and whispered, "I saw this when I was wiping him today. A golden tattoo. Weird, isn't it?"

X quickly walked over to the bed to examine it, his brows furrowing ever deeper. "What is this? An anchor? I've never seen a captain with a tattoo like this before!"

"Yes, it's the anchor. It suddenly appeared today, emitting strands of golden light, like the appearance of the Lord." The woman made the sign of the cross with awe on her face.

"Why isn't the cross the manifestation of the Lord?" X was extremely confused.

"I don't know either. But when the anchor appeared, his heart beat for a moment. Really, I saw it clearly, it really beat." The woman lifted the quilt covering the man.

X turned his head away, not daring to look at the man's slit chest and exposed heart. It was too tragic. Even after more than a decade, he was still tormented by the initial feeling of grief.

But he forced himself to look back and said disappointedly: "It's not beating."

"It only jumped once, and then there was no movement. I should have recorded it to show you. Le Qinglan's blood is still effective. The captain's body has not decayed for so many years because of that drop of blood." The woman gently covered the man with the quilt.

Without medical equipment or supplies, they could only store the man's body like this.

"I have to find a way to capture Le Qinglan and take her blood!" X murmured.

The woman shook her head and sighed.

They all knew that capturing Le Qinglan was more difficult than capturing Heinrich, as he was protected by thousands of high-level vampires at all times.

"Dad, why don't I go back to Solo?" The woman said with a wry smile. "I absorbed a drop of Le Qinglan's blood. I didn't become a vampire, nor did I age. My appearance has always remained that of a twenty-year-old. Solo should still have some interest in me. By his side, I can help you get a lot of information."

The woman stood in the golden sunlight, her snow-white skin with light blue veins revealed, like a piece of crystal jade, her long seaweed-like hair fluttering in the wind, continuously emitting fragrance, and her holy face was as beautiful as the bright moon reflected in the water.

If there are angels in the world, she is them.

X scolded sternly, "What nonsense are you talking about? Daddy would never let you go find that bastard! Have you forgotten how he treated you? He threw you to a bunch of low-class vampires to eat. If the captain hadn't arrived in time to save you, you would have been torn to pieces!"

X slumped down in the chair, covering his face and sobbing. "Don't go back. Let's find another way. The captain won't blame us. If he could hear us, he would stop you too."

Even so, X shed tears of guilt. He knew exactly how to save the captain, but he was completely unable to do it.

The road is right ahead, but they cannot cross it, because what stands in their way is not danger, but a natural chasm.

The woman squatted beside him, patting his back with her soft palms, and said gently, as if coaxing a child: "Daddy, don't cry. There will be a way. Don't cry, don't cry."

X blew his nose and cried even louder.

At that moment, the woman in the leather jacket called and said succinctly, "The goods have been taken away by the buyer, and I can't track them."

"Why can't I track you?" X asked with tears in his eyes.

Leather-clad woman: "...You went to the captain's room and cried again? How old are you?"

She waved her hand impatiently. "Forget it, let's not talk about that. The buyer flew a drone to retrieve the goods. There was a magnet hanging from the drone, which sucked the box away. I can't fly, so I couldn't follow it. Besides, you can't buy drones on the market anymore, right? Those fancy things haven't been made in eight hundred years."

"Maybe it was bought more than 20 years ago. Come back first and don't worry about the buyer." X ordered.

---

Elsewhere, Zhuang Li stood on the rooftop of the research institute, retrieving the drone he had built. He always carried a signal jammer in his jacket pocket, which he had also assembled himself and could block surveillance cameras.

So he can walk around outside freely without worrying about being discovered by security guards.

After returning to the laboratory, he immediately locked the door and began to study the composition and properties of the three types of blood.

On the day Zhuang's mother attacked Wang Annie, he had guessed that silver weapons could kill vampires, so he secretly disassembled a computer and scraped off several contact points for experiments.

The contact points of computer contacts are made of metallic silver. High-level vampires also like to play with computers, so they did not prohibit the production of computers. This is how the few silver mines that were not bombed were preserved.

Zhuang Li mixed powdered metallic silver with three drops of blood, made a glass slide, and observed them one by one under a microscope.

After a few minutes, he sighed and said, "Metallic silver can indeed destroy vampire cells."

7480 spread his hands and said, "But you can't find that much silver to make weapons. And even if you could make weapons, you can't get close to Okar. He has many high-level vampires protecting him. They have a very keen sense of smell and can smell humans from a long distance."

Zhuang Li took three more drops of blood and observed them under a microscope.

7480 clapped his chubby hands and said, "Master, I've got an idea! Why don't you quit your job and become a scrap collector? Collect old computers, scrape the contacts, and collect the silver. Once you've collected enough silver, you can make a dagger. Once you've made a dagger, you can go to that carnival and be a sacrifice. That way, you can assassinate Okar!"

Zhuang Li shook his head and sneered, "You little idiot! The sacrifices at a carnival party will be stripped naked and carried onto the banquet table. How can you hide a dagger when you're naked?"

7480: “Is that so?”

Zhuang Li was too lazy to pay attention to it.

7480 said aggrievedly: "Master, why do you call me a retard?"

"Little retard is a nickname, don't you like it?"

7480 flattered: "...Of course I like it." Damn it, I can only make a living by selling smiles now.

Zhuang Li straightened up, loaded the images of blood cells taken by the electron microscope into his computer, and said calmly, "I know how to kill Okar. On the night of the blood moon, I will burn all the hundreds of vampires in the Prince's Palace to ashes."

7480: “!!!”

The host, the great devil, takes revenge too quickly!

7480: "Master, how did you burn them to death? Did you buy gasoline and set them on fire? It's written in the script that vampires cannot be burned to death. They have super strong self-healing abilities."

"It's simple. Poison them to death." Zhuang Li pointed at several photos on the computer screen and said, "These are vampire cells."

Zhuang Li clicked on the keyboard, bringing up several images of normal human blood cells and saying, "These are human cells. Can you see the difference?"

7480 looked at it carefully and said hesitantly, "Vampire cells have many holes, but human cells don't have holes."

Zhuang Li pulled up a few more cell images and continued, "These are human cells. Do you see any difference between them and vampire cells?"

7480 was stunned. "Is this also a human cell? Impossible! How come it has so many holes like a vampire cell?"

Zhuang Li then explained: "This is human cancer cells."

7480 exclaimed in surprise, "Vampire cells are similar to human cancer cells!"

Zhuang Li nodded. "That's right. So, in a sense, vampires are humans made up of cancer cells. To kill them, all you have to do is kill those cancer cells."

Zhuang Li looked back at the microscope and said slowly, "I'm going to use polylactic acid and co-polylactic acid to make a kind of nanoparticles. These nanoparticles have a very interesting property: they can absorb light of a certain frequency, which in turn generates heat and vibrations. If they continue to absorb light, their heat and vibrations will also increase. Do you understand what this means?"

7480 pondered for a while, then muttered to his fingers, "...Master, you've already called me a retard. Do you think I can answer that?"

Zhuang Li opened his palm and flicked his fingertips slightly, imitating the gesture of holding a heart. He slowly said, "Human cells don't have holes, so if these nanoparticles are absorbed by the body and enter the internal circulation, they will be deflected by the smooth, intact cell walls and then excreted through the metabolic system. They are completely harmless to humans."

“But vampire cells are full of holes. When these nanoparticles collide with vampire cells, they won’t be bounced off. Instead, they will penetrate through the holes and penetrate into the cells, remaining inside the vampire’s body forever.

"After daybreak, when these vampires walk into the sunlight, these nanoparticles will absorb enough light to generate heat and vibrations. When the heat and vibrations reach a certain intensity, the cells where the nanoparticles are located will be shattered."

Zhuang Li's slightly twitching fingers suddenly opened wide, and he said with interest, "With a bang, this vampire will explode in the sunlight, shattering into a ball of flesh and blood. Just like their ancestors were burned to ashes by the sun at dawn. Their bodies have been transformed by Le Qinglan's blood, so I will send them back to the darkest era."

7480 was stunned.

By this time, it finally understood that the potion invented by the host could make vampires afraid of sunlight again! Ironically, vampires nowadays think they are not afraid of sunlight, so they will walk outside without restraint after dawn...

They will be burned alive by the sun!

7480 held his forehead and groaned: "This great demon, the host, is so damn poisonous! What on earth is wrong with his brain? He can even invent such a medicine! Damn it! The child of destiny of this world is going to be killed by him again!"

Zhuang Li smiled softly and continued, "There's something even more special about these nanoparticles. Do you want to know?"

7480 knelt and said, "Master, please speak."

"By slowly combining the relevant chemicals in the proper order and under strictly controlled conditions, these nanoparticles will self-assemble. In other words, without the need for complex chemical procedures or large-scale machine production, I, alone in this laboratory, can synthesize dozens of kilograms of nanoparticles at a time. A few dozen kilograms may not sound like a lot, but it's more than enough to kill all the vampires in the Prince's Palace."

When he said this, Zhuang Li had already made a list of the relevant chemicals and submitted it to the purchasing department.

In a few days the buyer would deliver his murder kit.

No one could understand what he was going to do.

7480 surrendered. It knew that the host could save the world.

It never doubted this for a second.