Chapter 10 Chapter 10 A painstaking effort

Xu Zhenyu followed Bai Lizhen and Ren Sihong to their residence.This is a multi-storey residential area surrounded by green trees. Ren Sihong's family lives in a small unit with three bedrooms and one kitchen on the fifth floor of a light yellow building.He took out a hard plastic punched card and inserted it into the slot of the electronic door lock, and the door opened automatically. As soon as Xu Zhenyu entered the room, he felt a new look.The ceiling and walls have been repainted, and the white walls illuminate the interior brightly.The placement of furniture has been adjusted to look harmonious and decent.Professional books, political books and a wide range of scientific and technological books are placed in the bookcase.Chinese roses are in full bloom in a light-coloured earthenware pot on a chest of drawers.On the large desk is a pot of asparagus with slender branches and leaves like emerald clouds, which is elegant and generous.It can be seen that the reunion of the couple brought infinite joy to the family.Although Bai Lizhen has been back for several days, the whole family is still immersed in a festive atmosphere.

"Xiao Xu, what are you looking at, why don't you sit down!" Bai Lizhen grabbed his arm and twisted him onto the sofa. "Sister Bai, it's not easy for you to be reunited! Xu Zhenyu said happily." "No." Bai Lizhen's face glowed with excitement again, and some freckles appeared faintly, "I heard that it was thanks to Secretary Yang in their institute that I was transferred to Chujiang's "Academic Academic Research" magazine as an editor .” A buzzer on the wall in front of the desk sounded "beep, beep, beep", and a small red signal light lit up next to it.Ren Sihong got up and went to the kitchen.After a while, three cups of fragrant jasmine tea were served, and he said with emotion: "We worked in two places as soon as we graduated. At that time, some well-meaning friends advised us to get married early, saying that we would be able to do it if we got married. Quicker. We had no other way, so we did it, but it didn't do much good. You see, our children are eight years old now."

"Hey, why didn't I see Xiaoying?" Xu Zhenyu asked. "She's doing math problems in the hut, I'll call her." Bai Lizhen's voice was full of love for her girl.After that, he stood up.Xu Zhenyu hurriedly stopped her: "Don't go, let her do it." When talking about her girl, Bai Lizhen talked more.She sat down again and happily said to Xu Zhenyu: "Xiaoying started school when she was five years old, and she has been learning very well. This time, she won the first place in the district's elementary school mathematics competition."

As they were talking, Xiaoying came out of the hut.As soon as she saw Xu Zhenyu, she greeted "Hello, Uncle Xu" loudly, and ran to Xu Zhenyu's side bouncing around. Xiaoying is a fat girl, with a pair of big and round eyes on Apple's face, she is very cute.Xu Zhenyu pulled her over, took out a small box from his pocket, put it in her hand, and said, "This is a gift from your uncle." Xiaoying opened the small box, saw that there was an electronic test judge inside, said thank you, and immediately tried it happily. At this time, the buzzer beeped and beeped again on the wall, and a green signal light was lit at the same time.Bai Lizhen got up and said, "The dishes that were cooked just now are already hot enough, I'll go to the kitchen to fry some more dishes, and then we'll eat."

After a while, the food was ready, and they all sat down at the dining table in the outer living room.Ren Sihong poured three glasses of wine, and Bai Lizhen picked up some pearl balls and a large piece of steamed meat with lotus leaf powder for Xu Zhenyu, and said to him: "This is a Chujiang-style dish I specially made for you, you should eat more. Xu Zhenyu took a sip and praised: "You are from the Northeast, you cook really good Chujiang cuisine." Bai Lizhen said happily: "If you like it, you can eat more. There are also two Northeastern dishes here - fried pork belly and mashed potatoes. You should also try it."

"Mom, I also like Northeast cuisine." Sitting beside her mother, Xiaoying yelled. Bai Lizhen picked up a piece of starched potato, dipped it in a bowl of cold boiled water, and put it in Xiaoying's bowl. They ate and talked, as harmonious and casual as a family.Bai Lizhen remembered what she saw at Xu Zhenyu's house, and asked, "What did you two study together this morning?" Ren Sihong adjusted his glasses and answered first: "Zhenyu has made a major breakthrough in his study of ancient star maps!" After hearing this, Xu Zhenyu said shyly, "It's not really a major breakthrough..."

Bai Lizhen picked up a chopsticks of food for him: "I don't have any food today, Xiao Xu, you are welcome! Tell me about the study of the ancient star map." "You're not welcome—I just speculate that the copper ball is an information rocket sent from the universe, hoping to communicate with us people on Earth." Xu Zhenyu's tone was very affirmative. "The old nose is far away from the universe, is it possible to communicate?" Bai Lizhen was a little suspicious. "How can it be impossible? Aren't we earthlings doing everything possible to get in touch with aliens today?" Xu Zhenyu unquestionably listed some facts, which convinced Bai Lizhen.

As early as 1820, the great German mathematician Gauss suggested planting a large coniferous forest belt in Siberia in order to contact aliens, using it to outline a huge right-angled triangle, and planting wheat in the right-angled triangle.In this way, aliens can see the contrast of yellow and green colors in summer and autumn, and the contrast between snow-covered wheat fields and dark forest belts in winter and spring. In 1840, there was a man named Fan Linuo in the Vienna Observatory. He suggested digging a circular artificial lake with a diameter of 30 kilometers in the Sahara Desert, filling the lake with water, and pouring a layer of kerosene on the water.After being lit, the existence of Earthlings is shown to aliens with a huge circular torch.

Hua Luogeng, a famous Chinese mathematician, suggested using "number" and "number-shape relationship" to communicate with aliens.This "number" is to use the number of small circles to represent the numbers 1 to 9, and then fill them in the grid, so that the sum of the three numbers on any vertical line, horizontal line, and diagonal line is 15.The "number-shape relationship" is the Pythagorean theorem represented by geometric figures.In order to let the aliens know that we can prove geometrically, he also suggested to send the "Qing Chu Zhu Ru Tu" to the aliens.This diagram proves that the sum of the squares of the two sides of a right triangle is equal to the square of the hypotenuse.Hua Luogeng's suggestions are all based on the achievements in the history of mathematics in ancient my country.

The United States launched the spacecraft "Pioneer 10" on March 2, 1972. A special metal sign six inches wide and nine inches long was specially placed on the spacecraft.On this sign, the position of the earth in the universe is recorded.In order for the aliens to see the true image of the human beings on Earth, nude portraits of a man and a woman were engraved on the sign.It flew away from the solar system in 1983 and drifted toward the depths of the universe at a speed of more than 40,000 kilometers per hour.Of course, it would take 80,000 years to fly to the nearest star at this speed, not to mention that it would be even more difficult to be discovered by aliens, but in any case, it is the first "information rocket" launched by us humans to fly away from the solar system !

A similar metal signage was also placed on the "Pioneer 11" spacecraft launched on April 5, 1973. After it completed its missions to Jupiter and Saturn, it became the first spacecraft launched from the earth to the universe. Two "information rockets". Half a century ago, some people used radio waves to send contact signals to space. Unfortunately, the radio technology at that time was very poor, and the radio waves sent were very weak. Even if the aliens had the most sophisticated Accepting the instrument may not necessarily be able to find it.In 1974, the United States had an outer space exploration observatory located in Puerto Rico. It used the largest parabolic antenna with a diameter of 300 meters in the West at that time to send a group of greeting signals in the direction of the Hercules constellation: "Hello!" There is a very famous globular cluster in the universe.It has 300,000 stars, so there must be more chances of aliens.At the same time, our solar system is flying in this direction at a speed of 20 kilometers per second.Unfortunately, they are so far away, even if they can receive this set of greeting signals, it will be 20,000 years later. Later, in 1977, the United States successively launched two spacecraft to explore Jupiter and Saturn, which are "Voyager 1" and "Voyager 2".After completing the missions of exploring Jupiter and Saturn, they also fly to the depths of the universe as a kind of "information rocket", looking forward to the discovery of aliens.On these two spaceships, there are no metal signs, but copper disc records, record players and instructions that can be stored for ten billion years.The record can be played for two hours, and the content includes songs by Bach, Beethoven, Mozart and Armstrong, as well as greetings from the then Secretary-General of the United Nations and the President of the United States to aliens, as well as greetings in nearly 60 languages ​​​​and 35 languages ​​on Earth. All kinds of natural sound.Sounds of wind and rain, thunder, waves, dogs barking, beasts roaring, birds singing, babies crying, everything.Among the 115 photos and charts that I brought with me, there are also the majestic appearance of the Great Wall and the scene of Chinese people having lunch.The designer's thoughtfulness is so thoughtful that one cannot but feel admiration.In the 1980s, the soviet union built the world's largest radio telescope "latan-600" in the caucasus, which used a parabolic antenna with a diameter of 600 meters to undertake the task of searching for information on aliens. In December 1981, the Soviet Academy of Sciences hosted the second international conference on the search for extraterrestrial civilizations in Tallinn, Estonia. Two hundred scientists from various countries gathered to compare the methods of collecting radio signals from extraterrestrial civilizations, exchange Opinions to promote human beings to strengthen research on extraterrestrial civilizations.Soviet astrophysicist Salevsky said with confidence: "We must look for extraterrestrial intelligent life, look for it, look for it, and look for it again." Bai Lizhen was deeply moved by the continuous and great efforts made by the people on earth so far in order to establish contact with aliens.Now she also feels that in ancient times, it was not impossible for aliens to try to get in touch with the earth people by launching copper balls. With the sound of the buzzer, a pink signal light came on.The color TV in the corner of the living room turned on automatically, and Xiaoying said, "I'm going to learn English."He left the dining table and sat down in front of the TV. Bai Lizhen added a bowl of rice to Xu Zhenyu, and said enthusiastically: "You should write down your findings and conjectures, and I want it to be published in Archaeological Academic Research as soon as possible, so that more people can participate in discussions and research." "Don't talk big. I won't be able to publish it at that time. I'll see how you explain it to Zhenyu." Ren Sihong "threw cold water" on Bai Lizhen from the side. "Why can't it be published?" Bai Lizhen asked in bewilderment. "You are new to the editorial department, and you don't know much about many things. As far as I know, the editing and publishing of "Academic Research on Archeology" is under the leadership of the Provincial Academy of Sciences. Some new arguments can only be published after they have been reviewed and approved. This is not you. It can be decided." Ren Sihong explained. "Whether it can be published or not, I want to write this paper anyway." Xu Zhenyu took a sip of the simmering soup: "I'm going to ask Professor Huang to have a look first, and then I'll hand it over to you." "Yes, don't worry about that, just write yours - we patronized you to talk about it, but we didn't let you have a good meal." Bai Lizhen was very sorry to see Xu Zhenyu put down the bowl and chopsticks. "Sister Bai, your craftsmanship is really good, I eat very delicious." "I heard that Yang Fan's craftsmanship is better. When you two get married in the future, you will eat better!" Bai Lizhen said with a smile.A slight blush appeared on Xu Zhenyu's cheeks. "Zhenyu, why do you look like a big girl? On the day I came back from Sichuan, Yang Fan went to pick me up at the station. It was obvious at a glance that she was a quiet, intelligent and good girl. I heard that you went to the Xiakou When she left, she even saw you off at the pier. But you are always so evasive towards others. If she hadn't been so sincere to you, you wouldn't have been able to find her even with a lantern!" Bai Lizhen talked like she was talking to her own brother. Xu Zhenyu shifted his gaze to the ground.Ren Sihong noticed it and gave Bai Lizhen a wink, signaling her not to embarrass Zhenyu.Zi Lizhen glanced at Ren Sihong, and said to him: "Every time I come and go on a family vacation, I don't take the time to have a good talk with Zhenyu. But you, working and living in the same place as Zhenyu, why don't you persuade him? You spend the whole morning with him We study aliens together, why not help him study his 'inner man'? You don't have to wink at me today, I want to have a heart-to-heart talk with Zhenyu." She turned her eyes and said to Xu Zhenyu in a more gentle tone: "Listen to me: in terms of looks, Yang Fan has delicate features and outstanding appearance; in terms of character, she is quiet, intelligent, caring, and considerate to others; in terms of knowledge, she has a master's degree in medicine and is now an attending physician. Some achievements have been made, and the medical profession still attaches great importance to it! Zhenyu, let me ask you, what is she not worthy of you?" Xu Zhenyu was shocked and raised his head to look at Bai Lizhen.Bai Lizhen's freckled face was full of kindness and concern. Xu Zhenyu didn't dare to look at it directly. He lowered his head and murmured: "Sister Bai, I didn't mean that..." "Then why did you become cold towards her?" Bai Lizhen asked again. "I, I..." Xu Zhenyu faltered, his mind was in a mess.Bai Lizhen's words were like a blender, muddying up many contradictory thoughts that had been stored in his mind over the years, and he couldn't make a clue.The rationality of a scientific worker made his thoughts clear from the chaos.He told Bai Lizhen: "Emotionally speaking, I like her the same as before, but intellectually speaking, after she is studying for graduate school, I can't allow me to accept her kind of feelings. Her knowledge has already reached a very high level. She has a high level, and she has a great future. Frankly speaking, I am not good enough for her. I think she should and can find someone who can care and help her in her career.” "Aren't you just such a person!" Bai Lizhen said. "I'm just an ordinary worker, a person who has neither a title nor a college degree. How can I take care of myself and not consider her?" Xu Zhenyu said sincerely. "You're thinking wrong. She told me that what she loves is neither a title nor a degree, but a person, a person who is striving to make a career. She thinks you are such a person. We think she is a very discerning girl." Bai Lizhen said sincerely and touchingly. Xu Zhenyu was startled, not knowing what to say for a moment.