How did you, a prisoner on death row, become an important weapon of the country? Yecheng Gao Weiming

"Finally, in 1924, French scientist de Broglie proposed the conjecture of wave-particle duality and made reasonable assumptions."

"He finally proved to the world that light is both a particle and a wave. At the average value of the time dimension, light is a wave. At the instantaneous value of the time dimension, light is a particle."

"Thus, the debate over whether light is a wave or a particle, which has lasted for more than 300 years, has finally come to an end! People finally accepted that light is both a particle and a wave. The wave-particle duality simultaneously made quantum mechanics possible, even in addition to photons. Their two different properties are also found in other substances.”

"But does the study of light end here? No, far from it!"

"More than ten years later, some scientists restarted Yang's double-slit interference experiment in an attempt to discover the ultimate secret of light!"

"Because they realize that only by understanding the laws and laws of light can they make better use of light and guide light. Let light improve our entire human world."

"Teacher doesn't have time to tell you the experiment process in detail. The teacher can only say that this experiment is very weird and terrifying. It is completely beyond human cognition, even scientific cognition."

"Because through the upgraded double-slit interference experiment, scientists discovered..."

"When we observe light, light takes the form of particles. When we don't observe light, light returns to the form of waves."

"What does this mean? It means that light can change according to human will! It seems to be unpredictable, and it seems to exist transcendently!"

"After scientists discovered this, they once again subverted everyone's understanding."

"In the following decades, people had no choice but to continuously upgrade this experiment and continue to study the ultimate mystery of light."

"It's a pity that the test has not yielded better results so far!"

"But if you define light, it can be summarized in one sentence..."

"It is: light has wave-particle duality. It is both a wave and a particle. It is a wave when it is the average value of the time dimension, and it is a particle when it is the instantaneous value of the time dimension. It is a particle when humans observe it , when humans do not observe it, it is a wave..."

"Cough cough cough..."

"At this point, Teacher Dai's cough became more serious, and blood even overflowed from the corner of his mouth."

"teacher!"

"When all our classmates saw this, they no longer cared about listening. They hurriedly left their seats and rushed forward, just crying!"

"Teacher Dai saw our appearance, his eyes were stern, and he said..."

"Why are you crying? Don't cry! Did you understand the lesson I just taught?"

"We nodded our heads. I understand, teacher, I understand. Please go to the hospital quickly. We will carry you there. We will carry you there now..."

"But the teacher waved his hand to stop us, with a wry smile on his face."

"It's too late! Children, it's too late. In addition, I also know that you don't understand. You don't have a primary school education. How can you understand what wave-particle duality is?"

"When we heard this, we all hung our heads in shame."

"Yes! We really didn't understand. It was like listening to a book from heaven. Not only did I not understand, but Qin Wenjing also didn't understand. All the students in the room couldn't understand."

“When I heard Teacher Dai say that light is both a particle and a wave, I was already confused.”

"But the teacher would rather not save lives and treat patients, but still want to finish this lesson to us, but we can't understand. How sad will Teacher Dai be when he finds out?"

"But the teacher grinned, and the blood from the corner of his mouth hung down from his chin, dripping onto the floor of the classroom."

"It doesn't matter! Children, the teacher is not angry. The teacher knows that you don't understand."

"But why does the teacher still tell you these things?"

"because……"

"Teacher Dai moved his body with great effort so that he could take a few more breaths."

'He said, because light is hope! children! '

"You are the light that has just risen, but I am the light that is about to go out. I can only pass on my weak light to you and my hope!"

"Only if the light is passed on, can our Dragon Kingdom and our humanity progress and develop!"

"Li Xin, it's just like the teacher told you."

"Is it useful to read and recognize words? It seems that there is no use now, but it doesn't mean it won't happen in the future!"

"There won't be one in the future, and that doesn't mean there won't be one in the future! It's always useful!"

"Teacher has no future and can't change anything! I can only pass on this light to you. I hope you will study hard and study hard. In the future, you will become a great person like Isaac Newton, Thomas Young, and Einstein... ahem Cough…poof…”

"Teacher Dai vomited blood again, his face became paler and the light in his eyes disappeared completely."

"teacher!"

"We couldn't listen anymore, so we cried and asked the teacher to stop talking. We understand, we really understand. You have passed on the light you have to us, and we will pass it on to more people in the future!"

"Teacher Dai still waved his hand, you don't understand! You will never understand until you understand the ultimate secret of light!"

"It's a pity that the teacher doesn't understand it anymore, and he doesn't have time to understand it, nor does he have time to wait for others to understand the secret of light."

"Now...please help the teacher fulfill his last wish, okay?"

"Teacher Dai looked at us. We were still crying uncontrollably. The teacher was obviously in his last moments."

"He said in a weak voice, help the teacher memorize the definition of light, and continue to read and learn to read and study the mystery of light, okay?"

"When we saw that the teacher was about to die, we nodded like crazy, okay, okay, okay, teacher, we promise you."

"Teacher Dai was worried, and asked us to recite what he just said, the definition of light that humans have so far."

"But I am a stupid person. I can't remember clearly what the teacher just said."

"The other students were also stunned, and they don't remember clearly."

"Only Qin Wenjing, the orphan who came out of Qinjiagou, who used to be called Qin Gouwa, remembers it clearly, word for word."

"He led us to recite it loudly."

"Light has wave-particle duality. It is both a wave and a particle..."

"It is a wave when it is the average value of the time dimension, and it is a particle when it is the instantaneous value of the time dimension..."

"It is a particle when humans observe it, and a wave when humans do not observe it..."

"As Qin Wenjing recited it, all our classmates also started to recite it. He recited it three times in a row, and the sound resounded throughout the orphanage. All of us remembered it firmly in our hearts."

"After we finished memorizing it, Teacher Dai had already closed his eyes with a smile! He left us completely..."

"call……"

With a long sigh, the story ended here, and the brain space became quiet again.

Ye Cheng sat quietly, still sighing and sighing.

He didn't expect that Li Xin's first half of his life would be so hard.

He never imagined that his teacher Dai Jingzhi would make such a big sacrifice in order to pass on civilization.

Even though Dai Jingzhi knew that he was going to die, he still wanted to teach the children the last lesson.

This class not only benefited Li Xin and the others for life, but also made Ye Cheng perceive more unusual things.

Light!

What exactly is it?

What ultimate mystery does it contain?

What does it have to do with Li Xin becoming a brain developer and returning to the late Ming Dynasty to change the fate of the human race?

Ye Cheng doesn't believe that Li Xin's story ends here.

Sure enough, after a moment of silence, Li Xin's voice sounded in his mind again.

"My friend, do you think the story ends here? No, it has only just begun."

"Next, I will continue to tell you about the bizarre and legendary experiences of those orphans and what has happened in this world."

"But before I tell it, I have to tell you a story five light years away from the sun..."