This statement reminds me of a scene from many years ago.

I was only fifteen or sixteen years old at the time, and one day I slept until midnight and suddenly woke up with urine. When I came out of the toilet and was about to go back to the house to continue sleeping, I passed by my father's study and saw that the light was still on, so I couldn't help but lean into the crack of the door and look inside.

The field of vision is limited, and I can't really see the situation inside the house, but there seems to be a slight sigh of voice.

I leaned harder against the door to see better, but I pushed it open all of a sudden, only to hear my father's shout from inside the room: "Who? "It scared me out of the way.

He stood up and looked back to see that it was me, and then he breathed a sigh of relief, and stood up and walked over to me.

It may have been frightened just now, and the approaching figure of my father in the shadow of the lamp was particularly oppressive, making my whole body begin to tremble uncontrollably.

He walked up to me, saw me cowering, and sighed again. I looked up at him and saw that his eyes were full of sorrow, the first time I had seen such a look in the eyes of a father like a strong man.

"Dad, what's wrong with you?" I asked.

He shook his head, raised his hand and gently stroked my head, and said in a deep voice, "If only I could do it." ”

"To do what?"

"Change your fate." He replied.

I was completely puzzled by these words: "What fate to change?" ”

He became excited as if he had been stimulated by something, and said firmly: "Reversing time can change fate, it must be, it must be possible......"

When I wanted to ask again, his attitude suddenly cooled down again, and he only said, "Go back to sleep and close the door." He went back to his desk. I could only withdraw cautiously, not daring to say anything more.

I was young at the time, and I didn't take it seriously. Seeing this sentence now, this long-dormant memory suddenly jumped out, and I immediately felt extremely uneasy, to be precise, an ominous premonition!

I was about to turn the next page, when I suddenly heard a voice calling me: "Tao Yong, let's talk about it!" ”

As soon as I looked up, I saw that the rest of the class was looking at me. Although the class has only been open for a week, my name seems to be known to everyone among my classmates and teachers, and even the people in the other Western medicine pharmacist class who are training at the same time will greet me warmly when they see me. It's not easy for me to hide in the city.

I stood up in response and swept my eyes in the direction of the podium. In the past, I could always listen to lectures while sleeping, but today I was so involved in reading that I didn't even know what the teacher was talking about, and I didn't even look carefully at what the teacher looked like.

This sweep is really eye-catching. The teacher was actually a young girl, with long hair and a shawl, a standard goose egg face, willow eyebrows and almond eyes, and a slight pursing of her lips, revealing two looming smiles. Just by looking at it, it already makes people like Mr. Lu Xun described, "36,000 pores all over the body, all of them uncomfortable".

This look at the beauty was a few seconds late. The little teacher immediately smiled and said, "Do you need me to repeat what I just said to you?" ”

"Huh? No...... No......" I muttered.

The classmates couldn't help but burst out laughing when they saw that I, who was usually sharp and sharp-toothed, actually looked so demented.

This smile gave me enough time to react, and when I looked at the three words "Blood Evidence" written on the blackboard, I could already guess what she was talking about.

At the same time, some sinful little thoughts began to emerge, and I wanted to play tricks on this little teacher who made me make a fool of myself in public.

I cleared my throat and said loudly: "Speaking of "The Theory of Blood Evidence", I have to mention its author, Tang Rongchuan, a medical master of the Qing Dynasty, ......."

As soon as everyone heard that I was starting to scratch again, they stopped laughing and listened to me continue. I saw that the little teacher was silent, just looked at me with a smile, and it seemed that the direction of the speech was generally good. "Tang Rongchuan was one of the earliest scholars to begin to discuss the relationship between Chinese medicine and Western medicine. Although many things in traditional Chinese medicine are good to use, they are difficult to understand and are not easy to promote and pass on. Although it cannot be measured by the standards of Western medicine, it can be combined with some Western thinking methods to help make it easier for everyone to understand what is really going on in Chinese medicine. Tang Rongchuan's main achievement is here. ”

"Take "The Theory of Blood Evidence" as an example, although I have not read it in its entirety, I have heard of his great name. The reason is that for the first time in this work, the difference between yang and yin is discussed more clearly and completely...... "At this point, I deliberately paused.

"What are Yang and Yin people?" Sure enough, the little teacher was tricked.

"It's men and women!" I said nonchalantly.

"Hahaha......" There was another burst of laughter. The beautiful teacher noticed that I was teasing her with apocryphal words, and two red clouds flew on her fair face, and she looked at me with anger and anger, and her face looked even more delicate.

I could have taken advantage of the victory, and I still have at least a hundred words in my stomach that I can use to continue to tease her, but for now I am more concerned about the book in my hand, so let her go for the time being.

So I changed my words and said: "As for the specific mechanism, all of you are studying medicine, and you must be very clear, so I won't repeat it here." In a word, if you want to better understand your own gender, the book "Blood Evidence" is a must-read. By the way, Tang Rongchuan is from Sichuan, maybe the story of the Sichuan Tangmen in the martial arts novel really comes from Tang Rongchuan and his family! ”

"Hahaha......" everyone laughed again.

With that, I sat down calmly and smiled calmly at the teacher. In any case, I believe that this group of people will read this book 100% after listening to my words, and it can be regarded as helping her realize the value of this lesson. She shouldn't have glared at me, she should have thanked me!

However, being stared at by a pair of beautiful eyes is also a very happy thing! I muttered a few words to the classmates at the front table, and I knew that her name was Meng Yiling, don't look at the young person, an authentic Chinese medicine practitioner, and a disciple of one of the four famous doctors in Beijing.

I couldn't help but sigh when I heard it, it seems that she is really abruptly beautiful, guilty of sin, ha!

As soon as the hiccup passed, I hurried to hurry up and continue reading my book. But when I turned to the sentence I just saw, it was a blank page. Turning it back, it was all blank, and there was no more words.

I was dumbfounded. What is this? Just hook out people's addiction and it's gone? Did the old man finish writing, or was the rest torn off by Mr. Tian?

I looked at the spine, but there was no sign of tearing. Could it be that the second half is written in some special way? I took the book in my hand and read it, touched and smelled it, and investigated it repeatedly, but I didn't get anything out of it for a long time.

Teacher Tian also said that I should read it at night, if I read this kind of half-tone book before going to bed, I wouldn't be so angry that I couldn't sleep!

I started to fidget, thinking about it, I really can't wait for tomorrow, so I still have to find a way to inquire about it first.

The best candidate that immediately came to mind was, of course, Tian Ge.

As soon as the bell rang, I was running out of the back door. When I agreed with Tian Ge to be interviewed by her before, she told me that I could go to the study room on the east side of the second floor of the main teaching building to find her. Let's try our luck now.

When I walked into the school building, the second class of the afternoon had just begun. When I walked to the second floor, I was about to turn to the east when I suddenly heard a familiar voice faintly coming from the nearest classroom on the west side.

This is...... Teacher Tian's voice.

I couldn't help but turn left and walk to the back door of the classroom and look in through the glass window on the door.

Sure enough, I heard it right, but who was Mr. Tian on the podium? The blackboard reads the topic of this lesson: "The wave-particle duality of light."

After only a few minutes of listening, I was so dizzy with a bunch of concepts and formulas that I didn't understand, yawned, and almost fell asleep in the hallway. Just as I wanted to surrender and turn away, a casual topic from Mr. Tian caught my attention.

He first asked, "Everyone knows the concept of dimension, right?" ”

The students in the room said they knew. So he started writing typical examples of each dimension on the blackboard from top to bottom.

Dimension 0 is a point. It doesn't have any unit of measurement;

1 dimension is a line, and it only has one unit of length;

2 dimensions is a plane, which has a width in addition to length, a total of two units of measurement, which can be thought of as an extremely thin piece of paper;

The 3rd dimension is a space with a new unit of measurement added to the length and width: direction. Together, they are commonly referred to as length, width, and height. We are currently in a three-dimensional space;

So, what about 4 dimensions? He drew a big question mark on the blackboard.

The first four concepts went relatively well, and by the time they got here, the students weren't in the same boat. Most people can't answer it, and the few who have ideas are also stubborn and inconsistent.

In the end, everyone focused on Mr. Tian. He laughed: "On this issue, there is actually a debate in the academic community. One of the more mainstream theories is that 4 dimensions is to add one more attribute in addition to length, width and height: time. ”

I heard the word "time" and my hands clenched subconsciously. I don't know if the answer I want is already out there!

But the students were clearly puzzled and began to ask questions and ask the teacher for specific examples.

Teacher Tian smiled and took out a photo from his bag. It was an old-looking, black-and-white photograph of a young man sitting by a lake with a smug expression.

"Do you know who this is?" Teacher Tian asked.

The students whispered discussions, but no one answered loudly. As I was listening, I said with certainty in my heart, "You! ”

Although his appearance has changed a lot, the ambition between his eyebrows and the enthusiasm that is about to overflow are really no different from him today.

Sure enough, he announced the answer: "This is me fifteen years ago." ”

Everyone was in an uproar. In other words, with the living conditions of more than ten years ago, it is really rare to be able to take such a photo, and not everyone can do it.

He continued: "You can see that I was like this at that time, young and energetic, and now, entering middle age, I am beginning to look old and become vicissitudes. But I'm still me, what's the difference between these two me? ”

Inspired by him, everyone began to say the answer: "Time! ”

"Yes," he said, as if encouraged, "what I have experienced from my past to my present is a four-dimensional world. Not only me, but the whole world has its past, present and future, and everything operates in 4 dimensions. Because the lower dimensions do not show the higher dimensions, and we all live in a three-dimensional space, we cannot see the full four-dimensional space. Seeing this photograph can only give us a perception of a 4-dimensional space, not an entity. ”

At this time, my father's words suddenly appeared in my mind: balance is constant, imbalance is impermanence, impermanence returns to permanence, and time is reversed.

I immediately understood what he was trying to say!

I looked at Mr. Tian in the classroom, he had finished the topic, but he was not in a hurry to continue, but just stood there with a smile. I suddenly thought, why did his eyes seem to be in my direction?

The first reaction was to immediately crouch down and avoid the blazing gaze.

When I came back to my senses, my palms were already drenched with sweat.