There are many things in the world, which are really coincidences, just like Zhang Ailing said, "There is no earlier step, no later step, it happened to happen".

Because the doctor was often attacked by this child, but could not think of a solution, he was very distressed. Just when the doctor was helpless, there was a sudden unexpected turnaround.

That's a coincidence.

The doctor has a very good friend named Frank? Charles Darwin (1822-1911). This Flack is none other than the cousin of the famous Darwin, the founder of the theory of evolution.

Frank himself was a well-known anthropologist and explorer, who, like his cousin Darwin, had a deep understanding of human evolution.

The doctor and Frank met at an academic conference, and they hit it off at first sight, talked very speculatively, and soon became friends who talked about everything.

Once there is an unsolvable depression in people's hearts, they often confide in good friends, and doctors are no exception, for this growing "strange child", he really doesn't know how to deal with it, this child is just eleven or twelve years old, he can have such a strong offensive ability, and he doesn't know what will happen as he grows older.

So, in a long conversation, the doctor told Frank everything about the freaks.

Frank was shocked to hear this, because although he was well-informed and had a deep study of anthropology, he had never heard of such a strange thing.

There is a famous saying that "scholars have childlike curiosity", and Frank was no exception, and he was more inquisited than shocked by the wonders told by doctors. Therefore, he asked to go to the doctor's house to see what was so special about the child that this freak had developed.

Before Frank first met the "weird child", the doctor repeatedly warned him not to go near the child to avoid being attacked.

Frank agreed on the surface, but he was still skeptical of the doctor's words, especially after seeing the child, he felt that the doctor's warning was a bit exaggerated, because the child looked thin and small, even thinner than children of the same age, how could such a child have terrible attack power?

So, Frank decided to put it to the test.

The child was withdrawn, and when he saw Frank and the doctor come in, he didn't say hello, just glanced at him blankly, and then continued to play origami on his own.

The doctor didn't interfere with the child, he tried to make the child feel that it was a normal friend visit, and Frank pretended to be nothing, pacing slowly around the room, looking at the paintings on the wall.

While the doctor was pouring the coffee, the child was facing away from Frank when Frank suddenly took a piece of candy out of his pocket and threw it at the child from behind.

He did this because he had heard from the doctor that the child was very sensitive to moving objects around him and was able to fight back very quickly. The purpose of throwing the candy cube was to test whether what the doctor said was true.

But what happened next was clearly not what Frank expected:

The kid seemed to have eyes on his back - before the candy hit him, he turned around sharply and caught the candy with his hand, and almost at the same time, the kid jumped over at a very fast speed, and kicked Frank in the calf bone at a very fast speed, all these actions were completed almost instantly, and Frank didn't see clearly, he only felt a sharp pain in his calf, so he fell to his knees at once, and then rolled on the ground in pain.

The doctor who was pouring coffee heard that the movement was wrong, and when he looked back, he found that his friend was already rolling on the ground with his legs in his arms, and he knew that Frank must have been attacked by the child, so he hurriedly ran over, picked Frank on his back, and then sent him to the hospital where he was After an examination in the hospital, he found that Frank's calf bone was kicked and cracked. After putting on a plaster cast and lying in the hospital for half a month, he was able to walk on the ground, and it was only after this experience that Flac completely believed what the doctor said.

This happened in 1879.

After that, Frank and the doctor discussed the most about how to find the Achilles heel of the "weird boy" before it was possible to subdue him.

During this half-month hospitalization, Frank was not idle, his hospital bed and table were full of materials, and he buried his head in these piles of materials every day, seriously thinking about all kinds of strangeness about this child.

Although it is said that it is "injured muscles and bones" for 100 days, because Frank's calf bone was only kicked and cracked, and it has not yet reached the point of breaking, he recovers relatively quickly, and he can walk on the ground after half a month.

For ordinary people, if they are attacked once, they should have palpitations and will not go to see that child lightly. But this Frank was different, he was really adventurous, and just two days after he came out of the hospital, he asked the doctor to take him to see the child.

The doctor knew his good friend's temper and knew that he couldn't resist him, so he agreed, but he specifically told Frank to be careful this time and not to provoke the child again.

Frank had apparently learned his lesson from the previous time, but just watched the kid from afar, and didn't venture to provoke him or get close to him.

In this way, Frank went three or four more times. Each time, he watched the child's every move from afar, while writing something in his notebook, and his brow furrowed, as if he were pensive.

The doctor knew Frank's erudition, especially his anthropology, and he was eager for his good friend to do his best to solve the mysteries about the child and come up with a solution.

Frank was a leading expert in the field, and his research soon progressed.

The doctor remembers very well that it was a dusk in the autumn of 1879, and the doctor was just about to return home from the hospital, when suddenly Frank sent a servant to invite him, saying that he had urgent business to see him.

Although the servant didn't know what was going on, the doctor could vaguely guess that the reason why Frank was in a hurry to find him might be about the child—most likely Frank had suddenly thought of something, so he couldn't wait to tell him. Because during this time, Frank was completely immersed in the study of the child, and went to the British Museum to borrow a lot of materials the other day.

The doctor was right!

As soon as the doctor entered, Frank shouted to him like a child, "I know what's going on!" ”

Once the two were seated, Frank eagerly told the doctor the results of his study on the child.

It turns out that there is indeed a peculiar "atavistic phenomenon" about the pair of freaks - that is, the growth and development process of this pair of freaks condenses the development history of human beings for millions of years: they are a special creature that can live both in water and on land;

Their appearance when they were young should be very similar to the earliest human ancestors who lived in water, although they can develop into a human in a very short period of time, but many internal organs, as well as many bodily functions, are still very different from ordinary people.

Judging from its eyes, skin, and amphibious characteristics at the beginning, this freak is close to frogs in many ways. In particular, it can be as sensitive to moving objects as a frog, which can better explain its connection with frogs.

Now that you know that it has some characteristics similar to frogs, you can come up with a way to deal with it.

The doctor understood most of what Frank was saying, but he was puzzled only by Frank's final conclusion that "knowing that it has some similarities with frogs, you can figure out how to deal with it."

Frank didn't rush to explain to the doctor, but smiled mysteriously, and took out a metal object from the drawer, which was the size of a finger and looked like a whistle.

Sure enough, I saw Frank put it in his mouth and blew it. However, to the doctor's surprise, the "whistle" did not make any sound. But Frank didn't stop, still blowing with his cheeks puffed.

The doctor became even more confused, and thought to himself: What are you blowing a whistle that doesn't make a sound?

Just as he was about to ask Frank something, suddenly, something strange happened - he saw three cats hurrying from outside, as if they had heard the summoning order, they ran into the house with a clear goal, obediently crouched in front of Frank, and then looked up at Frank in unison.

Then Frank stopped, and he took three fish from the jar next to him and threw them to the cats, who then took the fish and ate them in the corner of the nearby wall.

The doctor was confused by Frank's strange behavior, and he didn't know what Frank was up to. Frank still smiled mysteriously and didn't say much, just took a book from the table and handed it to the doctor and said, "This is a book I published three years ago, and all the secrets are in this book."

The doctor took the book with a blank face, and he looked at the title of the book, "InquiriesintoHumanFacultyanditsDevelopment", and Frank also specially helped the doctor turn to pages 26-28 of the book for the doctor to read.

When the doctor finished reading these pages, it dawned on him what had just happened.

Through these pages, the doctor learned that Frank had studied the range of sounds that humans and other animals could hear. After long-term research, Frank found that the range of sounds that various animals can hear is different; Because of the different frequencies of the sounds, some sounds cannot be heard by humans, but cats can; But what cats can hear, dogs may not hear;

The sound of the whistle that Frank had just blown was inaudible to humans, but cats could hear it.

What's even more amazing is that Frank not only knows the hearing range of different animals, but also knows what frequencies of sound can make them extremely uncomfortable and weak.

After explaining this, Frank took out another whistle, and then put it in his mouth and blew it, this time, the whistle still did not make any sound, but I saw that the three cats who were eating fish, as if they had been succumbed to the ground, and struggled hard one by one, trying to climb but could not get up.