The gloomy dungeon, damp and cold, the air is filled with the stench of decay and human body, and the smell is disgusting.

The mossy and mossy walls of the dungeon are filled with torches every few meters. The torches were "crackling" and burning, because the air was lacking and the oxygen content was too low, and it was emitting black smoke from incomplete combustion, shining on the ground one by one, looking distorted and frightened.

"Tick tock", the condensed water on the top of the dungeon kept falling, dripping on the head of a dungeon guard, wetting the hair little by little, wetting the cheeks, and finally flowing into the neck, extremely cold. But the guards who were standing did not dare to move, and the muscles of their whole bodies were tensed together, like a dragoon's javelin stuck in the ground. Trying his best to maintain a steady breathing, the rest of his eyes involuntarily drifted to the entrance of the dungeon.

At the entrance, a young man, a boy of fifteen or sixteen years old, dressed in a somewhat simple aristocratic costume, walked in expressionlessly. Behind the boy, the captain of the dungeon guard was resigned, smiling all over his face, and his eyes were restless and frightened.

I can't help but be afraid of the captain of the guard, the boy is the youngest son of the king, and he is the second in line to the throne of the next king in addition to the eldest prince. As long as the other party is a little unhappy, he may be in a different place at any time.

Thinking of this, the guard captain's heart tightened even more, and the expression on his face was a little stiff.

Richard didn't pay much attention to the look of the captain of the guard. It has been fifteen years since he came to the current medieval-like world, and his supernormal psychology allows him to fully adapt to his identity, and know how to do it to accomplish his goals more efficiently, and then solve one of his ultimate doubts.

"Da Da Da", Richard said to the captain of the guard as he walked towards the dungeon: "I asked you to lead a team to capture wizards, or people related to spells and abnormal supernatural phenomena to study for me, you have carried out it twice, but without success, just catch a group of ugly-looking farmers to make up the numbers." Now, for the third time, are you sure you really caught it? My patience is limited. ”

"Your Royal Highness, this time...... This time......" The head of the guard captain instantly sweated, his Adam's apple shook a few times, and a stiff voice came out of his throat, "This time...... I promise I really caught it this time. ”

"What about the soldier's pension?" asked Richard again.

"Huh?" the captain of the guard was stunned, "Pension?

Richard raised his eyebrows: "Don't tell me that the money for the pension of the casualty soldiers is all swallowed by you alone." If you do, I kind of appreciate your courage. ”

"No!" the guard captain's eyes widened, and he stammered, "Wang...... Your Royal Highness, there were no casualties. ”

"Huh, there are no casualties, and your soldiers don't have any casualties when they capture people related to the paranormal?"

"Yes, not a single one. The captain of the guard said seriously.

"Uh, okay. Richard spoke, already having some kind of speculation in his mind, and exhaled, "Then tell me, what did you catch this time?"

"Yes, Your Highness the Prince. The captain of the guard calmed down and replied seriously, "This time, a total of four were arrested, a white-faced demon, a halfling, a vampire, and a ......."

......

"Dada...... Da!"

In the middle of the ring, Richard stopped in front of a cell somewhere deep in the dungeon, squinting at a figure in the cell. The complexion on the other party's face was abnormally snow-white, without any blood, and it looked extremely terrifying. He was sitting on the floor of his cell, looking at him with a panicked look.

The voice of the guard captain sounded, lest Richard didn't see it, and said, "Your Royal Highness, this is the white-faced demon that you caught, you ...... it."

Richard just glanced at it, and walked forward.

The captain of the guard was stunned, not knowing why Richard was not interested, but he still shrunk his neck and followed.

Soon, Richard stopped for the second time, and in a nearby cell, a somewhat strange figure was huddled in a corner. The other party's face was full of wrinkles, and he looked more than fifty years old, but he was less than a meter tall, like a child, which made people feel weird.

The captain of the guard explained: "Your Royal Highness, this is a halfling......"

Before he could finish speaking, Richard shook his head, walked forward again, and stopped.

In the third cell, there was a monstrous human, pale in appearance, and the exposed skin of his face, neck, and back of his hands was covered in red spots, and in some places had even rotted away. The mouth is slightly open, and you can see that the other party's teeth seem to grow strangely, showing a strange blood red, which makes people shudder.

"Wang ...... His Royal Highness the Prince. The captain of the guard pointed to the person in the third cell, obviously nervous, and said, "This is a vampire, you should be careful not to be hurt by him." ”

"Huh. Richard spoke, his tone a little cold.

"Your Royal Highness, you ......"

Richard spoke up, "An albino, a dwarf, and a porphyria, the white-faced demons, halflings, and vampires you caught?"

"This ......"

"Do you have any biological knowledge?!Well, I forgot, there was no biological knowledge in the Middle Ages, but that's not a reason at all! If you think about it, you should know that if they were really white-faced demons, halflings, and vampires, you could catch them so easily? When the soldiers caught them without any casualties, you should have points, right? Didn't you learn any lessons from the previous two failures?"

"Uh, this ......"

"If nothing else, let's just talk about a vampire, do you see him like a bat in the legend? or can he fly?"

The guard captain's body trembled, but the next moment he was courageous: "Your Royal Highness the Prince, I really didn't see this evil vampire turn into a bat and fly, but the skin on his body really can't see the sun, and it will rot when he sees the sun, and you see his current appearance because of the sunlight on the road."

He was drinking blood when I took him, and he hated garlic as well. What is this not a vampire?Your Highness the Prince, he is a vampire without a doubt!"

"But he's just a porphyria. Richard said expressionlessly.

"Huh?" the captain of the guard was stunned.

In other words, he's just a sick person, and all the signs you see of him are the symptoms of the disease, although similar to the legendary vampire, but ...... Not. ”

"For ...... Why?" the captain of the guard looked puzzled.

"Are you sure you want to hear why?" asked Richard.

"This ......"

"Well, I'll explain it to you. "Porphyria, also known as hemovipin disease, is a group of porphyrin metabolic disorders caused by the lack of a certain enzyme or reduced enzyme activity in the heme synthesis pathway. It can be congenital, but it can be acquired. And once it appears, according to the level of the current era, well, there is no way to completely cure, and you can only barely maintain your life, and you will become this ghost. ”

"Huh?" the captain of the guard was still confused.

"Let's put it this way. Richard explained in more detail, "There are many parts of blood in the human body, and one part of it is called heme. Generally speaking, the human body uses 'iron' and 'porphyrin' to produce heme under the catalysis of specific enzymes.

However, in some people, due to the lack of this specific enzyme, heme production will be impaired, resulting in extremely high levels of 'porphyrins' in the body. Once it sees light and is activated by ultraviolet rays, it will be converted into a "carcassic" toxin, resulting in a large area of erythema, herpes and even ulceration on the surface of the human body.

The mouth can also be affected, causing the gums to ulcerate and the roots to be exposed, making the teeth appear to be particularly long, and they can gradually turn purple-brown due to the deposition of porphyrins.

At the same time, because heme cannot be synthesized and normal blood cannot be produced, porphyria patients will have severe anemia and must replenish blood from the outside world in order to survive. Intravenous delivery is a good way, but considering the current level of science and technology in this world, they can't operate at all, so they can only choose another way - drink - heme is extremely tenacious, can resist all kinds of digestive juices, enter the digestive system and absorb through the small intestine.

The reason why they hate garlic is also simple, because garlic will have allicin, which has a strong bactericidal effect. Due to the special condition of their body, the consumption of garlic can induce and greatly aggravate their symptoms. In fact, if you stab them with a silver object, they will hate it just as much - silver also has a strong bactericidal effect.

In conclusion, you have to understand one thing, and that is – vampires are vampires and porphyria are porphyrias. Maybe they're a little the same, but they're not the same thing at all! I'm asking you to find real vampires, and things related to wizards and sorcery, not individual patients, you know?

When you are capturing them, you are not met with resistance and killing, but with pleading and crying, and there is really no doubt in your heart......?

"Your Royal Highness the Prince, I ......" The captain of the guard was speechless, and his heart was occupied by great fear. He had heard a lot of ruthless methods from His Royal Highness the Prince, and if the prince was really angry......

Richard didn't continue to entangle with the captain of the guard, stepped to the deepest part of the dungeon, and said loudly: "You said that you caught a total of four this time, and the last one is a real wizard. Well, then let me see, it's true or not. ”