Fu Ping'an stepped on the back seat of Harley Motorcycle and looked carefully. He found that this was not a real Harley, but a Qianjiang 150 Prince Motorcycle with a similar appearance, with a high handlebar, a low seat, and a large and wide tire. It was very comfortable to sit down. Xin Zichao twisted the accelerator and the bright headlights illuminated the road ahead. The motorcycle ran away at lightning.

The motorcycle drove on the county and township roads for an hour, and walked through various trucks and agricultural vehicles like fish. After passing a town, it drove for a distance. The lights in front were bright and we arrived in a big city.

The so-called big cities are just county-level cities similar to the East Island. There is always a disco in the county town to accommodate the restless youth of the young people in the county town. Fu Ping'an saw the huge "rolling stones" neon lights on the buildings from a distance. The traffic downstairs was full of traffic, and cars, motorcycles and tricycles were bustling. Xin Zichao drove to the parking lot and signaled Fu Ping'an to get off. He didn't turn off the engine and handed the car directly to a parking guy.

When my younger brother knew Xin Zichao, he called him Brother Jian respectfully. Xin Zichao patted his younger brother on the shoulder, and he was flattered and full of joy. The two entered through the back door of the disco hall, and everyone along the way was respectful to Xin Zichao. That kind of respect comes from the heart, not like to the boss of the investor group, but more like fans and idols.

Near the dance floor, the music was very loud. Under the bizarre lights, all kinds of men and women shook their heads and tails, and demons danced around. Xin Zi said to Fu Ping'an loudly: "Play whatever you want, your own place."

Fu Ping'an nodded and walked to the corner of the dance floor to enjoy it quietly. He was still wearing a hospital uniform and slippers, and no one cared about other people's outfits.

Suddenly, the music style changed, and Xin Zichao, dressed in a Terminator, took the stage, and there was a jubilation below. Someone screamed Brother Jian and some whistled wildly. Xin Zichao was wearing sunglasses, and the shiny steel nails and chains on the motorcycle jacket were walking on the stage as if there were springs under his feet. He pointed at the stage: "What's    up     handian!" The joy suddenly thundered, and the young people in the small town were as if they were injected with stimulants in an instant, twisting their bodies and screaming.

Fu Ping'an understood that Xin Zichao is the gold medal DJ in the disco. He is very good at stimulating the atmosphere. His mouth full of English and Hong Kong and Taiwan accents refreshes people in small cities. He stands in front of the mixer and skillfully adjusts the music and sets the atmosphere to a climax.

The music in the disco is extremely high, which tests the ability of people's eardrums to withstand the ability of their eardrums. All kinds of lights are extremely dazzling. People with neurasthenia cannot hold on for even a second. Fu Ping'an is a person who is afraid of the darkness, but there is no sign of an attack here, because he is afraid of the extremely quiet darkness and the loneliness of the empty people. The disco is crowded and the music is deafening, which makes him feel a strange sense of security in the dark corner. He closed his eyes and felt the rhythm of the music, and he actually enjoyed it.

I don’t know how long it took, a waiter came to take Fu Ping'an to the private room. Xin Zichao and several big brothers with strong local flavor were sitting here. There were foreign wine and cigarettes on the table. The music was still very noisy. He needed to shout into his ears when he spoke. Xin Zichao gestured to ask Fu Ping'an to drink, whispered a few words to a boss, and went on stage again.

Xin Zichao's appearance brought the atmosphere to a new climax. He didn't know when he changed his outfit. He had a pair of nine-minute black trousers, with eye-catching white socks underneath. The space dance steps were ethereal and dazzling. A song by Michael Jackson's "bilie     jean" was vividly performed. The whole disco was crazy about it, and the big guys applauded with cigarettes in their mouths, although Fu Ping'an felt that they might not know what Xin Zichao was singing.

The theory is that the disco is open until five in the morning, but after two o'clock, people gradually dispersed. Fu Ping'an slept on the sofa in the private room. When he woke up, he found that he was covered with Xin Zichao's motorcycle jacket. The music had stopped. The cleaner was cleaning the garbage in the dance floor.

Xin Zichao came over with a plastic bag and an insulated bucket. The bucket contained spicy and fragrant Hu La soup. Fu Ping'an's greed was all drawn out. This was the most enjoyable breakfast he had eaten.

After dinner, Xin Zichao took out a thick envelope and casually pulled out a stack to Fu Ping'an: "If you see him, take it."

Fu Ping'an didn't see him, and took the money and asked, "Old squad leader, why do they call you Brother Jian? They use a pseudonym?"

Xin Zichao said: "No, what pseudonym is used to make money legally? My name is Chen Jian."

Fu Ping'an's heart skipped a beat. Thinking that Xin Zichao was a severe schizophrenia, he didn't dare to say anything else.

As the city was about to wake up, Xin Zichao drove Fu Ping'an on his way home. The destination was 3374 Hospital. The east was white and the sky was getting brighter. The motorcycle reached its maximum speed. It took only 40 minutes to arrive at the hospital. The mental hospital in the valley was still sleeping. Xin Zichao hid his motorcycle and took Fu Ping'an quietly into the hospital. They went back to their houses to sleep. It was time to get up after a while.

...

A brand new day has begun. The patients eat breakfast, take medicine, do morning exercises step by step, and then move freely. Fu Ping'an is new and is not fully familiar with the environment. He leaned against the window and watched a few elderly patients playing recreation balls. He thought to himself why he didn't see Xin Zichao, maybe this guy is still taking a break.

I turned around inadvertently. On the playground downstairs, a patient was sweeping fallen leaves with a big broom. He swept it seriously and worked hard. Fu Ping'an was a little puzzled. Shouldn't the staff be responsible for the hygiene work? How could a patient be allowed to work? I looked closely and saw that it was not someone else who swept the floor, but Xin Zichao who had been having fun all night. It was just that his clumsy posture of sweeping the floor was completely incompatible with the space walk on the stage.

Fu Ping'an went downstairs and wanted to chat with Xin Zichao for a while. Dr. Wang also came over, put his hand in his white coat and passed slowly, and greeted him: "It's a big and powerful person to sweep the floor."

Xin Zichao threw away the broom and stood attentively saluted: "Doctor Wang Zai."

"You're too early," Dr. Wang replied.

"Report to Dr. Wang, I have found the money again." Xin Zichao took out an envelope from his pocket and presented it with his hands: "I don't know who lost it. I'll leave it to you. Please help me find the owner."

"I picked it up again. Did someone deliberately stuff it to you?" It seemed that this was not the first time Dr. Wang had encountered such a thing.

"I don't want money that is unknown." Xin Zichao said, with a muffled voice, honest and stubborn, and his tone was completely different from that of him at night.

"Okay, I'll help you collect it." Dr. Wang took the money, and Xin Zichao felt relieved and picked up the broom to continue sweeping the floor.

When Dr. Wang came over, Fu Ping'an stepped forward and asked, "How many personalities do he have?"

Dr. Wang said: "Have you seen it all? There are currently three, one is Yang Wanyong, one is Chen Jian, and the other is Wang Zhuang."

Fu Ping'an was puzzled: "Isn't his name Xin Zichao?"

Dr. Wang said: "Yes, he is Xin Zichao, but Xin Zichao's personality is hidden in the deepest part and is about to be destroyed."

"Why is this happening?" Fu Ping'an was creepy.

Dr. Wang said: "Like you, in one mission, all the comrades died, and only Xin Zichao survived. Usually, the survivors will feel a serious guilt and feel that they should not be alive. Xin Zichao is like this. He is living for his comrades, and he himself is dead in his consciousness."

Fu Ping'an thought of the four comrades who died, and felt a stinging pain.

"There are so many stories here, enough to write a few novels." Dr. Wang shook his head and left.

It took Fu Ping'an a while to digest the psychological shock brought by this incident and began to carefully observe Xin Zichao's three-dimensional personality. Yang Wanyong was cunning and humorous, liked pranks, Chen Jian was heroic and unruly, loved music, loved rock, Wang Zhuang was simple and honest, was born in a rural soldier, and was like Xu Sanduo.

Xin Zichao can seamlessly switch between the three characters. When playing different roles, his tone, action and strides vary. His ability to split is so wonderful and thorough, which shows that he and his three comrades are very familiar with each other. Just like Fu Ping'an and the four brothers, they are familiar with each other so that they can tell what the meaning is with one look and one catchphrase.

...

Fu Ping'an bought a self-study book. Studying self-study exams is one of the ways he prepared for himself after failing the exam. I heard that the self-study diploma is of high value and can be good at finding a job in the future. However, he didn't have many choices in terms of majors. He went for a diploma, not for a major, but just chose an economic management category.

Self-study examinations are a supplementary method of higher education. Unlike the general college entrance examination and adult college entrance examination, self-study examinations are lenient and strict, and no threshold, and anyone can take them. However, the examination is very strict and the difficulty is no less than that of the college entrance examination. One subject is qualified and one subject is completed. After all subjects are passed, the graduation certificate is issued. Self-study diplomas not only represent academic qualifications, but also mean that candidates have perseverance.

Fu Ping'an is not lacking in perseverance, but he lacks talent in some subjects, especially when he does not have a teacher to tutor in his self-study stage. He is very difficult to walk. He has no problem with liberal arts and English is also free of barriers. What he fears most is advanced mathematics. The self-study high school mathematics books are as obscure as heavenly books.

He thought of the first patient who needed textbooks. The man was named Shu Jingyu. He was said to be a civilian cadre in the Second Artillery Force and a top student at the National Defense Technology University. Fu Ping'an was determined to ask him for advice and played a guest role in a math teacher.

Shu Jingyu did questions every day. That blackboard was prepared for him. Although there was only one blind student under him, he still enjoyed it. Suddenly one day, there was an extra student under him, and his eyes were bright and he took notes.

Shu Jingyu was excited and talked endlessly, but Fu Ping'an couldn't understand a word. He raised his hand and asked, "Teacher, what are you talking about?"

Shu Jingyu wrote a line of English with chalk. The font was too elegant. Fu Ping'an watched it for a long time before he could tell it: birch      swinnerton-dyer    conjecture. He was shocked. He was immediately shocked. He had to work on mathematics to the point of a certain conjecture, which was to enter the realm of transformation. For example, Chen Jingrun, a famous mathematician in my country, has been studying the Goldbach conjecture all his life.

"Hilbert's tenth problem is insolvable, that is, there is no general method to determine whether such method has an integer solution. When the solution is a point of an Abel cluster, Bech and Swinetton-Dell conjectures believe that the size of the group of rational points is related to the nature of the related Tsita function z(s) near point s=1. The conjecture believes that if z(1) is equal to 0, then there are infinitely multiple rational points (solutions). On the contrary, if z(1) is not equal to 0, then there are only a finite number of such points."

After Shu Jingyu finished speaking, he walked up to Fu Ping'an and asked, "Don't you find it very interesting?"
Chapter completed!