Devil Fruit of the City

ps: In the book review area, some people said, what is Whitebeard, what is he, but I can only say that in the eyes of a thousand people, there will be a thousand Hamlets.

Another point, I have to reiterate that the protagonist is just a person who has the memory of Whitebeard, he is not Whitebeard, so stop comparing the two.

………

Night is gradually falling, the earth is pitch black, and only a faint moonlight can bring some light to the world.

Tang Tianyou searched for the smell and ran for several hours. He searched almost all the places where Tang Xiying's smell haunted. A few times he even found Master Tang's fast food restaurant, and almost exposed himself in front of his father.  Urban Devil Fruit 144

After all, his sister's accident cannot be known by his family for the time being, so as not to worry them, so he had no choice but to lie to his parents.

"The last place where Tang Xiying's smell appeared should be here, and it has just passed by, and the smell is still fresh. If I guess correctly, they should be here."

Tang Tianyou narrowed his eyes and looked at the abandoned factory in front of him.

This is the suburb of County H, and there are many factories everywhere. It is a pity that almost all of these factories have closed down or moved to other places.

Once upon a time, this place was still very prosperous, but I didn't expect it to become so desolate in just over ten years, and I didn't even see a single person here.

With a sigh in his heart, Tang Tianyou walked straight to the factory without hesitation.

In front of him is a rusty gate, which has been in disrepair for a long time, the surrounding area is covered with dust, the air is full of stale smell, and there seem to be some messy footprints on the ground.

Seeing the pitch-black gate in front of him, like the mouth of a giant beast that would devour people, Tang Tianyou stopped in his tracks and hesitated for a moment.

"Wait, if the fat man and sister are really inside, wouldn't I startle the snake if I go in so recklessly? Of course, with their strength, they can't hurt themselves, but they are afraid that they will jump the wall in a hurry and take the fat man and Tang Xiying as hostages. I'm going to throw the mouse at the mouse."

After thinking about it, Tang Tianyou felt that he couldn't just go in so directly. He had to investigate the situation around the factory before he could formulate a good countermeasure.

After a quick look around the factory, he found that the back door of the factory seemed to be blocked, and the only entrance was the main door of the factory.

However, as soon as he entered, he might be discovered by the people inside immediately.

Looking at the abandoned factory that looked like a tortoise shell in front of him, Tang Tianyou frowned. It was hard to do. How could he detect the situation inside the factory without disturbing the people inside?

After thinking about it for a while, Tang Tianyou slowly recalled that when his strength was stuck in a bottleneck, because there was no hope of breaking through his strength in a short period of time, he began to constantly test the ability of shaking fruit.

Among them, the manipulation of sound has become more and more proficient, and he can use sounds of various frequencies with ease.

One time, when he was watching the animal wonders program at home, he was surprised to find that there was also an animal in the Ziru world that used sound to the point of perfection.

It is a bat!

Bats are creatures that live in the dark, and their eyes have almost no function, but they can fly freely in the night sky, and can deftly avoid various obstacles to catch flying insects under very dark conditions.

Why?  Urban Devil Fruit 144

Scientists have revealed the secret that bats can perform echolocation by precisely adjusting the frequency of their sounds to quickly adapt to complex geographical environments.

Of course, bats can't get all the data about an object's position with just one echo, so they make a second, third, and fourth sound.

By varying the frequency of each call, bats can tell the difference, which their brains then map into a high-resolution 3D map of their surroundings.

Since bats can do this kind of thing, why can't Tang Tianyou, who controls the voice, do it? !

So, after several days of exploration and constant experimentation, Tang Tianyou finally mastered the bat-like ability, and he named it: Echo Map!

At this time, Tang Tianyou started the vibration silently, and the ultrasonic waves as high as 20,000 Hz centered on his body, causing ripples that could not be detected by the naked eye to spread out quickly.

The ultrasonic wave bounces off obstacles continuously, and then sounds of different frequencies are transmitted to the ears. Different types of information flood into the brain like a "tide". Then, a high-quality and clear 3D map slowly appears in the mind emerge.

This dilapidated and abandoned factory has a total of three floors. The first floor is the workshop, the second floor seems to be the processing location of some internal agencies, and the third floor should be the place to live.

The factory seems to be very large, and a series of dilapidated machines are neatly arranged on the first floor, among which there are constantly hungry mice rustling in and out of the factory.

However, there seems to be no one guarding the first floor of the huge factory. Is it because there are not enough manpower, so they hide and defend?

Confused, the sound map slowly extended upwards. There were still not many people on the second floor of the factory, only two or three people were guarding the stairwell. They seemed to be absent-minded, chatting casually. It's just that their waists are bulging, and they seem to have two firearms pinned to them.

Probing to the third floor, the number of people suddenly increased. Seven or eight big men gathered around the coffee table in the hall to play cards, and some others sat on the broken sofa with their eyes closed, and some sat on the sofa, very calm and calm. They kept wiping the firearms in their hands; a few others held binoculars and kept observing back and forth.

"It doesn't look like this group of people are good at dealing with firearms. It's not easy for the Chinese government to manage firearms so strictly." Tang Tianyou frowned, "However, why aren't Fatty and Tang Xiying here? I haven't detected it yet?"

The sound continued to extend to the distance, passed over obstacles one after another, and dilapidated rooms, and finally stopped in a small dark room, about ten square meters, with only a small iron window the height of two people on the surrounding walls. It's a bit like a cell in a prison, unusually dark.

I saw that there was a bed two meters long and one meter wide in that small black room, and two people were lying quietly on it, a man and a woman, motionless, as if in a coma.

"Fatty and sister are indeed here. I guessed right before. They were really kidnapped!" Tang Tianyou was very excited. After searching for hours, he finally found them. The damage, but, perhaps, has not had time to hurt."

"These guys dare to kidnap my friends and relatives, I can't spare you!" Tang Tianyou gritted his teeth, a frightening cold light flashed across his eyes.

The Echo Map observed the surroundings, and Tang Tianyou could clearly determine which place was the blind spot of their field of vision.

"Here it is."

Yuebu!

Footsteps hit the air several times in a row.

Tang Tianyou walked in the air like stepping on a staircase, and jumped directly into the window on the second floor of this abandoned factory.  Urban Devil Fruit 144