Chapter 440 The Wish of the Fairy

In the disease [room], Lin Hong asked Shu Xiaoxian to face the wall, and then said, "You can make a sound like you did just now. Attention, after making a sound, you need to do one thing, that is, listen carefully and see if you can hear the echo of the sound."

Shu Xiaoxian didn't know what Lin Hong wanted to do. She just thought it was a fun game, and she immediately made a crisp sound.

"Da!"

"How's it going? Do you hear me?"

Shu Xiaoxian did not answer Lin Hong's words, but continued to make several times in a row. Finally, she nodded and said happily, "I heard it! I didn't pay attention to it at the beginning. The two voices overlapped together. I listened carefully twice before I heard it clearly.

The interval between the sound and echo made by

is very short, and it can only be measured in milliseconds. If both voices are regarded as someone talking, it is equivalent to a person speaking at a very fast speed.

Normal people's ears can't distinguish the subtle differences. Blind people are relatively better. If others speak at a normal speed, they will feel very slow. In this regard, their ears are much more sensitive than normal people. By fast-forwarding the tape several times faster, they can tell what they are talking about.

"Very good!" Lin Hong did not forget to encourage Shu Xiaoxian in time, "Next, you turn left, change a direction, and then listen carefully in the way you just did. This time, you should not only pay attention to the echo, but also compare the echo you heard this time with the last time, and pay attention to the difference between the two sounds.

Shu Xiaoxian immediately turned left with great interest, and then repeated it according to the previous steps until she really heard the echo clearly.

"How about it? Have you found the difference?"

"It seems to be almost the same." She frowned, "Brother, will there be a difference between these two voices? I can't hear it."

"Xiaoxian, don't worry, take your time. You may be a little unfamiliar at the beginning." Lin Hong patiently encouraged, "You can definitely hear it with your ability. Come on! Why don't you put your hands next to your mouth..."

Lin Hong thought for a moment and taught her a temporary way to put her hands as a loudspeaker around her mouth, and then made a sound like just now.

This time, Shu Xiaoxian's little face smiled again.

"Brother, I heard it! This time, the sound doesn't seem to be as loud as the last time... so..."

Speaking of this, Shu Xiaoxian is stuck. It's really difficult for her to describe the difference between the two voices. After all, she is still young and lacks vocabulary.

Lin Hong smiled and said, "You don't have to describe it, just remember it yourself."

"Oh!" Shu Xiaoxian nodded, "Brother, is this the game we are going to play? What's the use of me remembering this?

Lin Hong did not answer her question directly this time, but asked, "Xiaoxian, do you want to see something again?"

"Of course I want to!" She nodded heavily, pointed her finger on her little baby's fat face, and said, "Brother, you know, my greatest wish is to go to Mount Tai to see the sunrise. My mother said that the sunrise there is the most beautiful, the largest and roundest! Unfortunately, Xiaoxian can't see it. I can only see dark things every day now..."

Speaking of this, Shu Xiaoxian's mood became low again, and her little mouth was pouting.

"Mom and Dad have left... They don't want Xiaoxian anymore..." With that, Shu Xiaoxian's mouth flattened, and her voice was a little choked. In a pair of big and round eyes, she didn't know when she was full of tears.

Lin Hong didn't expect that his words would cause her such a big reaction. He secretly blamed himself. He simply couldn't mention any pot. He quickly comforted her and finally recovered from her sadness.

"Xiaoxian, the game my brother just played with you is called echo positioning. Do you know bats?

"Bat? I heard from my mother that it's my mother now. She said that bats are very powerful. They can fly very fast without eyes, and they won't hit anything. I really hope I can be like bats!" Children's emotions come and go quickly, and their attention is easily diverted. //The fastest text update of Shumilou www.shumilou.com No pop-up window no advertisement//

Lin Hong continued to ask, "Do you know how bats can see without their eyes?"

Shu Xiaoxian tilted her little head and thought for a while, and finally shook her head: "I don't know. Mom didn't say it."

"It uses sound waves to see things. That's the echo positioning I just mentioned. When it flies, it will make a special scream in its mouth, and then find something in front of it according to the echo of the scream.

"Is that so? That's awesome!" Shu Xiaoxian didn't know what Lin Hong said very well.

"Actually, you can also learn its methods like bats and see things with sound."

Shu Xiaoxian was stunned and said for a long time, "Brother, are you telling the truth? Can I really see things with sound like a bat?

"Of course, my brother didn't lie to you, because my brother has this kind of ability. Now, I'm going to teach you this skill. Are you willing to learn it?"

"Yes, yes!" She nodded hurriedly, "Brother, there are a hundred fairies, not ten thousand willing!"

Lin Hong decided to give her some vaccination first, but don't give up halfway.

So he said, "Xiaoxian, it's not easy to learn this skill. It needs to go through hard study and training. It may be a little boring. Can you stick to it?"

"I can! Absolutely!" " Shu Xiaoxian quickly patted her chest and promised, "Brother, I will do whatever you ask me to do. I will definitely be obedient!"

'"Good, I believe in you! Then let's continue and test it as we did just now. The sound in your mouth is equivalent to the scream of a bat. If the sound touches an object in front of you, it will reflect back. Just treat it as a ball. What you need to know is that different things, the reflected sound will also be different..."

Lin Hong carefully told Shu Xiaoxian the principle.

may be the key to whether he can see things or not. Shu Xiaoxian listened very carefully and remembered every word Lin Hong said as much as possible. Her memory is already good, so it's natural to stop talking about it.

Lin Hong first asked her to face the wall, glass, and the door respectively. The position of her standing was fixed, but changed the object reflecting the sound wave in front of her, and then asked her to listen carefully to the echo to distinguish the differences.

may have understood the principle of this. This time, the success rate of Shu Xiaoxian's discrimination has greatly increased. She can easily distinguish the previous thing and what type it is.

In her words, the sound wave reflected by the wall is more dull than that reflected by glass, and the open door will form a special echo, as if there is a sound shaking back and forth in front.

After she was familiar with it, Lin Hong began to do the test, let her turn around in place, then randomly shouted to stop, and finally asked her to say what was in front of her, whether it was a wall, glass, or a wall with a door.

This is very smooth, and Shu Xiaoxian can quickly accurately distinguish these three different wall types.

The success of this step made Shu Xiaoxian feel very excited. She had never thought that she could use this way to identify the objects in front of her before. Now, as long as you make a sound, you can tell yourself where the wall is and where the door is without the help of other people's eyes. This is simply great!

What made her more excited was that after more training, she seemed to really see a wall in front of her. Although Lin Hong told her that this was just her illusion, just the effect of the brain's automatic completion of objects, she didn't care. Anyway, she could "see" things, which also showed that her brother did not lie to her, and there was really a way for her to see things again.

Then, Lin Hong directly took down the plastic pad used by a nurse hanging on the top of the bed to record the log, and then began another training.

"Xiaoxian, the next training we are going to start is a little more complicated than just now. I will let something around you, and then you can tell which direction it is in you by sound. This thing is a small baffle."

"Let me touch it." Shu Xiaoxian said the mantra she often said.

Without eyes, she can only rely on touch to see the shape and surface of the object.

Lin Hong familiarized her with the plastic cushion about the size of A4 paper, and then began to train.

First of all, he directly placed the plastic board directly about 50 centimeters in front of Shu Xiaoxian's face, and then asked her to make a sound and listen to the echo.

After she heard it once, Lin Hong removed the baffle, and then asked her to compare the anomalies between them, and told her under what circumstances there was a fast baffle in front of her, and even let her hand reach out, touch it, and feel the specific position.

This time, it went smoothly. Shu Xiaoxian seemed to have mastered the corresponding tricks. She could quickly accurately tell the difference between baffles and without baffles.

Then, Lin Hong put the baffle on her right side, parallel to her head, and also 50 centimeters away. According to the previous comparison, let her remember the difference between having a baffle on the right and not having a baffle.

Such as an analogy, six directions of up, down, left and right were trained respectively.

Finally, Lin Hong began to test it. He did not tell Shu Xiaoxian where to put the baffle, randomly selected one, and then let her judge the position of the baffle by herself.

The final result made both of them very happy. Except for the position that Shu Xiaoxian could not accurately distinguish, she could basically report the results accurately in the other five positions.