Chapter 251: Subconscious Actions Are the Most Deadly It is 10 o'clock in the evening. Night has already fallen. Outside the window, there are twinkling lights. The hustle and bustle of the day is replaced by the low hum of insects at night. The world seems to have quieted down. At this time, the small party in the house ended. The two girls were sitting comfortably on the sofa watching TV, while Ermao was lying in his nest and didn't want to come out. He wasn't shy, but the new two-legged creature was too enthusiastic. Once caught, he would be subjected to all kinds of "torture". Xu Qingzhou and Guo Ziyang were cleaning, one washing dishes and the other sweeping the floor. After Xu Qingzhou packed up his things, he found that Ding Jiahui was rubbing Ermao again, and Guo Ziyang was following behind her happily. The two of them poked Ermao here and there, causing Ermao to cry in resentment for a long time. Seeing that Xu Qingzhou had just finished washing the dishes, Song Yao moved her butt to make room for him, then raised her feet and tried to put them into Xu Qingzhou's arms. Xu Qingzhou also happily extended his hand. "you?" Ding Jiahui's voice made the two people stop what they were doing, and they suddenly remembered that there seemed to be two light bulbs in the house. Guo Ziyang also looked at the two of them with confusion.
The air is a bit solid. Damn it, subconscious actions are the most deadly. Song Yao reacted quickly, kicked Xu Qingzhou, and said coldly, "This is Jiahui's position." "okay." Xu Qingzhou nodded in agreement and pulled a chair over to sit down. "Yaoyao~" Ding Jiahui was very touched and came over to throw herself on Song Xiaohua, "I know that I am still important in your heart!" Xu Qingzhou let out a long sigh. It was a close call. He was almost exposed. Looking at the two girls who were so close to each other, he was a little surprised. Among the girls, Ding Jiahui was probably the only one who could be so intimate with Song Yao. Guo Ziyang also pulled a stool over, sat down, wiped the sweat off his face, and said, "It's a bit hot." "Yes, it is a bit hot." Ding Jiahui finished speaking and looked at Xu Qingzhou: "Xu Qingzhou, your room doesn't have air conditioning?" She had just looked at Xu Qingzhou's room. It was not as big as her sisters' rooms and there was no air conditioning. This undoubtedly showed that Xu Qingzhou knew how to care for his girlfriend. I'm getting more and more addicted. "No." Xu Qingzhou nodded. Guo Ziyang said: "It's still very hot in Kyoto in the summer, can you bear it without air conditioning?" "I'm afraid of cold, so a little heat is fine." Xu Qingzhou said against his will. In fact, it has been getting hotter recently, and people can't stay here without turning on the fan. Ding Jiahui sighed beside her, "I envy you for not being afraid of the heat. Even in this month, I feel a little hot. We turn on the air conditioner in our dormitory at night." Guo Ziyang thought about it and asked in confusion: "I remember that what you hated most was the heat. You would feel like dying every time summer came." Song Yao looked at Xu Qingzhou with indifferent eyes, as if waiting for his explanation. He didn’t know if it was an illusion, but Xu Qingzhou felt that there was a meaning in this girl’s eyes that said, “I will just watch you perform quietly.”
Could it be that he was seen through? At this moment, even old comrade Xu Qingzhou was a little unsure. Sometimes, this girl's coldness was just a disguise, and she was actually very cunning. For example, the last time she went to Jinling, she sent herself a photo of Ermao, haha, just fishing. But no matter what, there is no reason to stop the show halfway through. Xu Qingzhou said stubbornly, "People change. Besides, the summer in Chengdu was hot and stuffy. It's different here in Kyoto." "That's right." Ding Jiahui nodded, as if she had thought of something important. "By the way, Yaoyao, let's buy eye cream together. I saw a set a few days ago." Song Yao didn't look at Xu Qingzhou again and nodded: "Okay." "One full-size 1g one, five 18g samples, 5ml lotion, and an eye mask." Ding Jiahui muttered to herself. Xu Qingzhou and Guo Ziyang looked at each other. OK, let's go. As it approached 12 o'clock, everyone simply washed up, said good night, and went back to their rooms to rest. On the second day of the Dragon Boat Festival holiday, the four of us went to visit the Peking University campus in the morning, took a bunch of photos, and had lunch in the Farm Canteen at noon. This month, the midday sun was already a bit scorching and it was very hot. No one was in the mood to continue strolling, so we agreed to hang out again next time when we had time and then went back home. subway station. Xu Qingzhou held an umbrella and watched the backs of Guo Ziyang and his wife disappear around the corner of the subway station. He thought to himself that he had to remind Guo Ziyang next time not to let his girlfriend think about my girlfriend every day. "Let's go." Song Yao yawned and took Xu Qingzhou's hand. Xu Qingzhou turned around and saw that Song Yao looked a little sleepy. "Didn't you sleep well last night?" "Yeah." Song Yao nodded, sighed, and said, "Jiahui kept asking me to hold her while she slept, and I was a little uncomfortable." Xu Qingzhou smiled and said, "Then you have to adapt as soon as possible." Hehe, after all, we will have to sleep together in pairs in the future. Song Yao was stunned at first, then quickly understood what Xu Qingzhou meant. Her eyes darkened and her hands were already on Xu Qingzhou's waist. "I have to adapt " On this side, Xu Qingzhou's fantasy was quickly shattered by the pain. Song Yao snorted and ignored him, thinking about what happened last night. Not only did she fall asleep in Ding Jiahui's arms, but she was also pulled aside by Ding Jiahui to compare their development. Then, Ding Jiahui was hit hard, and was troubled as to why she was still the same as after graduation, with no progress, so she asked Song Yao for the secret. The secret to growing up? Song Yao secretly let out a breath and looked down at her bulging chest. It was not as flat as before and it could cover more of her vision. After returning home, Xu Qingzhou couldn't help but go into the bedroom and take a nap, as he could only say that sleepiness is contagious. At 2:, when Xu Qingzhou got up, Song Yao was already writing furiously. He did not waste time, turned on the computer, and took out the manuscript paper of previous calculations. Er Miao was lying on the sofa, dozing off with his eyes closed. Xu Qingzhou noticed that this lazy cat was like this during the day, but very energetic at night. Today he was particularly lethargic during the day, probably because he was tormented by Ding Jiahui. Half of the holiday was already over, and he didn't plan to spend all his time helping Professor Zhao and the others make the model, perhaps because he felt he was too busy. Professor Zhao had said before that it could be done within two weeks.
The Dragon Boat Festival holiday is over, it’s Tuesday. Xu Qingzhou was making some hypothetical calculations in the library. Opposite him, School Beauty Song was going to class. Her computer and books were all placed there. During the holidays, he had completed the plan and started the first step, which was to construct a suitable sieve method and use it to find the distribution pattern of prime numbers. The direction is there, but the specific work is quite complicated. Xu Qingzhou is currently citing the double integral method in the elementary proof of the prime number theorem, hoping to supplement the sieve method. The prime number theorem is basically not used in the process of screening twin prime numbers, but you can borrow some mathematical tools in it to experiment for your own purpose. Of course, in addition to the double integration method, Hua Luogeng and Selberg also gave other very hardcore methods to prove prime numbers, but Xu Qingzhou could not use them. Through smoothing, we first obtain S, which is a Lipschitz continuous function. Then, we can consider converting (5) into an integral form. Take advantage of the monotonicity of the logarithmic function. 【logm≤∫mm+1logudu |S(ym)|logm≤∫mm+1|S(ym)|logudu】 Here, replace =m with u. 【∑m≤y∫.m≤ym+1m(m+1)=y∑m≤y1mylogy】 Half an hour later, Xu Qingzhou squinted his eyes and saw two sheets of manuscript paper filled with formulas in front of him. At this point, we can get a≤1, and then we can get a formula to supplement the prime number distribution law: lim infx→∞π(x)logxx≤1≤lim supx→∞π(x)logxx. (End of this chapter)