Five months later, the Particle Astrophysics Laboratory of the Chinese Academy of Sciences celebrated its first anniversary at Sias International College.

Due to Pan Tianyi's extraordinary computer talent and excellent study abroad experience, he was escorted by the leaders of SIAS school to continue his postgraduate studies at the Chinese Academy of Sciences. Today, he is led by Professor Yang Yitong, a man who was murdered by hostile forces abroad a few years ago and rescued by him.

In a dimly lit laboratory, Pan Tian connected a Pierce-type electron gun to a voltage and began an electronic double-slit interference experiment.

An electron gun fires a steady stream of electrons through two slits, A and B, and the electrons arrive at the detection screen one after the other, accumulating a jumble of bright spots like stars, and then producing several more obvious interference fringes, with the middle fringe being the brightest.

"These diffraction patterns that you see show that electrons have wave-particle duality."

Professor Yang walked in from outside the laboratory door and saw Pan Tianyi concentrating on the double-slit interference experiment, and commented with some surprise: "The principle of quantum superposition implies two very common features of quantum theory. One is uncertainty, where clear physical images no longer exist in the quantum world. The second is the superposition state, which is a probabilistic superposition of the measurement results of the quantum world when the conscious participates in the observation. ”

"The electronic double-slit interference experiment is creepy. In other words, human subjective consciousness influences the motion of microscopic particles. ”

Pan Tianyi listened to the footsteps of Professor Yang walking in, and recorded the light and dark interference fringes on the detection screen. He then attached a camera to the box to determine which slit the electrons had passed through to form the interference.

When an indivisible individual electron passes through the instrument, which slit does it pass through to reach the detection screen?

After a series of experimental statistics, it was shown that the relative probability of a single electron passing through the two slits was half of the total, but the interference fringes on the detection screen disappeared immediately.

Professor Yang looked at the results of the experiment, twisted his eyebrows and said: "Electronic double-slit interference is like a shy girl, it doesn't let you see at all, it seems to have consciousness and eyes, as long as you are looking at her, she can perceive it, and it will show different results." ”

"That's true, Professor Yang!"

Pan Tianyi was originally curious about the phenomenon of quantum superposition states and wanted to study the experiment alone, but Professor Yang came in and discovered it, and he did not blame himself for it.

"Science is long and tortuous, and if you don't understand and doubt today, there will be many answers in the future!"

Professor Yang Yitong looked at Pan Tianyi's face full of doubts, and comforted: "This afternoon we are going to attend the Xiangshan Conference with scientific frontier planning to discuss the conceptual planning of the CEPC collider. Maybe I'll also meet my old friend, an authoritative expert in the field of quantum communication. ”

"Attend the High Energy Annular Positron Collider Conference?" Pan Tian looked puzzled, and then asked. "An authoritative expert, who could it be?"

"He is Academician Pan Yun, and you can learn a lot about quantum entanglement from him."

Professor Yang looked at Pan Tianyi for a brief thought, and then said meaningfully: "The study of the Hadron Collider is the core content of this meeting. The conceptual design and site selection of the CEPC accelerator are mainly discussed, and it is estimated that it will not be officially completed and put into use for scientific research until 2030. ”

"At that point, a stream of high-energy particles close to the speed of light will be injected into the collision ring, causing the particles to collide to produce Higgs bosons or other unknown particles." Pan Tianyi's face was full of curiosity.

"Maybe there's more to discover!" Under Professor Yang's silver-rimmed glasses, a pair of brighter eyes flashed.

......

H Provincial Observatory Xinglong Observatory, a huge white building pointing obliquely to the starry sky, this is the newly built Guo Shoujing telescope, LAMOST.

"The stars in the sky are dazzling, and only on this quiet night can we observe the pleasures of the depths of the universe with the help of the survey telescope."

A young researcher named Liang Zhaokun, with his back against the exterior wall of a white building, said to Nan Boming, an engineering scientist at Tianyan.

At this time, Nan Lao sat on a stone on the ground, lit a cigarette, and was silent for a while, "This is the most authoritative and high-yield spectral survey telescope independently designed by my country, which can realize the ability to automatically make observations and process data information. ”

Over the eastern horizon, a constellation of Orions appeared. Several meteors appear to fly towards Earth from there, crash into the atmosphere and disappear.

"Yes, Professor Nan!" Liang Zhaokun immediately found a stone on the ground and sat next to Nan Boming.

"Monitoring through the telescope's spectral detector revealed that a large number of anomalous band celestial rays were found near the Orion Arm of the Milky Way. Based on the analysis of massive spectral data of celestial objects, it is likely that a large number of new stars have been born in the nebula near Orion, which are in different evolutionary sequences, some of them have evolved into neutron stars, and others have combined with larger blue supergiants......"

"And these large numbers of moving asterisms are likely to be affected by the spatial density wave of the Orion spiral arm, following the nebula thousands of light-years in diameter, and constantly spreading away from the periphery of the Orion spiral arm."

At this time, Professor Nan Boming pondered and pondered repeatedly, recalling last night's study of spectral data, he found that a large number of stellar objects showed redshift and blueshift phenomena, and finally he expressed his opinion: "These moving asterisms that spread outward contain a total of 206 stars and a small number of unknown objects. But their trajectories are not identical, most of their stars are rushing towards the Sagittarius spiral arm, and amazingly, some of them have disappeared from the Milky Way in the process. In addition, a small number of celestial bodies and comets are passing through the solar system and flying towards the Earth. ”

At this time, the mountains blew a late autumn chill, and the starry sky in the sky crossed another meteor shower.

A voice broke the silence between the two, and a young man ran over with an excited face: "Professor Nan, Dr. Liang!" We received a response from the ESA Astronomical Observatory, which monitored and verified the moving constellation in the vicinity of the Orion Nebula in the Milky Way based on the astronomical spectral data provided by our observatory, and expressed our deep shock and recognition of the observational data from our observatory! ”

This young man is Yang Zhou, despite Professor Yang Yitong's opposition, he privately applied to the school for early graduation, and is now following Professor Nan Boming, engaged in astronomical research of cosmic observation.

"This young man is as stubborn and courageous as his father, and that's what I think of him very much!"

Nan Boming smiled at Liang Zhaokun's colleague, and then the two stood up and returned to the observatory's spectral data analysis room.

The next morning, the imperial capital Xiangshan meeting.

After the meeting, Pan Tianyi and Professor Yang walked in a Chinese-style corridor, and a middle-aged man walked across from him, dressed in a gray suit and wearing black-rimmed glasses.

"Hello, Academician Yang! The construction of accelerator experimental devices is the development trend of particle physics research in the future. ”

"Fortunately, Academician Pan Yun! Quantum communication will revolutionize the future of human life. Yang Yitong saw his former good friend and stepped forward to greet him.

Pan Yun looked at the young man beside Yang Yitong with a puzzled gaze, and he was extremely surprised. He had never seen such an outstanding student who could be favored by Professor Yang. In this regard, Professor Yang saw it in his eyes, then smiled at Pan Yun, and pointed to Pan Tianyi with his palm:

"This is my student Pan Tianyi, maybe you all have a common topic about quantum mechanics! Just yesterday, my student was alone in the lab studying the wave-particle duality of microscopic particles. ”

At this time, Pan Tianyi was stunned at first, and then greeted Academician Pan Yun with respect: "It's a pleasure to meet Academician Pan, and I have admired the name for a long time!" I have a question for you, I don't know if it's okay? ”

Pan Yun looked at Pan Tianyi with an admiring gaze, and a pair of clear and attentive eyes flashed on his handsome and delicate face. Suddenly, he sensed fluctuations from the depths of his spirit, as if a pinch of quantum clouds were projecting an unpredictable flow of information into his heart.

He was silent for a long time, and then smiled kindly: "I only know about problems in the field of quantum communication, and if you ask a problem about the collision of high-energy particles, it will stump me!" ”

"From the ground to the far reaches of space, is there also quantum entanglement?" Pan Tianyi seemed to ask deliberately.

"Of course it exists, if a quantum communication satellite is launched into deep space, the receiving station located on the ground can obtain safe and reliable information through the quantum key."

"Oh, that's right...... Perhaps, there is also an entangled relationship between people and time and space......" Pan Tianyi stood in place with a blank face, whispering to himself. At this time, Professor Yang and Academician Pan burst into laughter, looking at the maple forests all over the mountains, which stained the sky red like fire. ,

After a burst of laughter, a mysterious man in sunglasses walked out of the pavilion next door, he looked at the peaceful crowd around him, and cautiously walked up to Professor Yang and Pan Yun:

"Hello! I am Secretary Yan of the National Occult Bureau of the Second Expeditionary Base, and according to the instructions of the Central Tinder Project, I will lead you to the Second Expeditionary Base to carry out special missions......"

Two days later, two Chinese Aegis warships departed from the Bohai Sea, passed through the East China Sea, and docked at the Zhoushan Military Port, the second expeditionary base.

Pan Tianyi followed Secretary Yan in a military off-road vehicle, passed through several buildings in the valley, and arrived at the mountainside a few kilometers away, a huge natural cave appeared in front of them, and several big red characters were carved on the top of the cave: Nanjing Military Region 8587 Armored Project.

Beneath the cavern, several familiar faces are standing. As soon as Pan Tian got out of the car, he saw a figure in green casual clothes, and his slender face was full of proud anticipation.

"Great! Great!"

"Tianyi, you are really the pride of our family!"

When the father saw his son appear in front of him, Panyu was so excited that he patted him on the back with his hand. "I haven't seen you for a year, your kid's shoulders have become much stronger!"

Pan Tian showed joy, looked at the crowd around him, and smiled shyly.

My father works here, and his mental state is reborn, and he does not have the depression of losing his mother in the past. In this regard, Pan Tianyi was full of gratitude to the comrades standing around, especially Gao Jianhua, who was standing next to his father, the reason why his father was able to work here was that Director Gao had spent a lot of thought in this regard.

"Pan Tianyi! Pan Tianyi! ”

A sweet and ethereal girl came from the side of Pan Tianyi, and I saw Han Yuting walking far away with her mother. When she learned from her father Yan Ming that her boyfriend was coming to the base, she came to the tank battalion repair shop early. After Pan Tianyi finished talking to his father, she walked over like a white cloud and threw herself tightly into Pan Tianyi's arms. In front of everyone's eyes, her fair face showed a crimson that was difficult to hide.

Pan Tianyi hugged Han Yuting for a long time, without showing any shyness, and simply regarded the people around him as transparent air.

"Look at this Nizi, she has been too pampered since she was a child." Han Yun looked at Yan Ming beside him, showing an embarrassed expression, but Yan Ming showed a cold look.

"Haha......" A burst of laughter came from Gao Jianhua, and he then smiled, "Young people nowadays regard love as much more important than anything else. I think I want a matchmaker in the middle, help you tie the rope and complete this marriage......"

After a period of envy, everyone left the scene and returned to the cave, talking about various problems encountered in their work.

Only Pan Tianyi and Han Yuting were left at the scene, they looked at each other and smiled, and then held hands and walked into this huge natural cave with curiosity.

The space of the cave is open and clear, separated by dozens of separate rooms, and further inside is the military secret space, where Pan Tianyi's father usually works, drawing complex kinetic drawings and piecing together a certain part of the armored car......