Chapter 157 Yes, Tu Qiongdagger is here
Xu Qingzhou: "."
Is this what it feels like to shoot yourself in the foot? It hurts so much.
"No, we just met by chance." Xu Qingzhou denied it. This second cup of milk tea tasted better than the previous one, although it was a bit full.
Song Yao nodded, stared at him, and asked: "Such a beautiful girl shows her kindness to you, don't you have any feelings in your heart?"
Haha, I'm starting to get upset.
Xu Qingzhou shook his head decisively and said, "No."
Song Yao withdrew her gaze and walked toward the community. The two of them were walking on the road, and the shadows under the street lights were long and intertwined.
Not long after, they arrived at the gate of Song Yao's community.
When leaving, Xu Qingzhou was a little curious and boldly said: "What if I am really moved?"
"It's none of my business whether you're interested or not." Song Yao glanced at him, thinking in her mind, if Xu Qingzhou was really like this, should she beat him until he couldn't take care of himself, or sink him into the river.
Xu Qingzhou laughed dryly and couldn't help but tighten his clothes. Just now, his back suddenly felt a little cold.
Come on, don’t ask such dangerous questions next time.
Song family.
Song Yao went home, said hello to Song Shisong, and said she was a little tired from shopping, so she went straight back to the house.
Zhang Junli and Song Shisong looked at each other and shook their heads helplessly. After returning, they also asked their daughter what the relationship was with Xu Qingzhou and whether they were already together.
But her daughter denied it, saying that she and Xu Qingzhou were just ordinary friends.
Zhang Junli hesitated for a moment and asked Song Shisong, "How about I ask again?"
"Forget it, let them handle the matter between these two young people themselves." Song Shisong smiled softly.
Zhang Junli said angrily: "You are really big-hearted. What if your daughter is bullied?"
"Bullying? You mean Xiao Xu?" Song Shisong laughed dumbly, recalling the scene of the meal that day, "I think it's good if our daughter doesn't bully others."
Zhang Junli couldn't help but laugh. There was really nothing wrong with this sentence. She knew her daughter very well and her fighting ability was not weak.
In the bedroom, Song Yao sat in front of the desk in a daze, but had no intention of reading.
This guy is so irritating, he still wants to have a heartbeat?
The more Song Yao thought about it, the angrier she became. She picked up the doll that Xu Qingzhou had caught next to her and punched it twice. After punching it, she let out a sigh of relief and continued to lower her head to read.
Another two days passed, and it happened to be the weekend.
Xu Qingzhou has been bored at home reading, studying the twin prime number conjecture, occasionally moving a wicker chair, drinking tea and sunbathing on the balcony, and living quite comfortably.
This day at 3pm.
Xu Qingzhou was lying on a wicker chair, squinting in the sun. After basking in the sun for a while, he picked up his phone and read the group messages. During this period, the most hotly discussed matter was the MCM competition.
The Peking University team chose question A, and the original question in English was available in the group.
【PROBLEMA:EradicatingEbola
Theworldmedicalassociationhasannouncedthattheirnewmedicationcouldstop】
This is a problem of Ebola virus eradication.
Roughly speaking, it is to establish a realistic, reasonable and useful model, taking into account the spread of the disease, the amount of drug required, possible delivery systems, delivery locations, etc.
Xu Qingzhou was not interested after taking one look at it. This question was not difficult. It needed to use the classic SIR (susceptible-infected-removed) model as the basis. However, the whole process was rather cumbersome and required the cooperation of three people. In the professional group, Kong Xianbo, Liang Quanjie, and Shao Jiuming were having a heated discussion.
Kong Xianbo: "I think we need to increase the Exposed (E) status. The body will not show symptoms immediately after being infected with the virus, but it is already contagious."
Liang Quanjie: “The main thing is to add critical patient (Critical, C) and dead (Dead, D) status.”
Shao Jiuming: "I have read the Topic A papers from previous US competitions. In fact, it is not that simple. Basically, a variant model of SIR is built, such as the SEIRCD model."
"The growth rate of the infected population is equal to the rate at which exposed people transform into infected people, [\frac{dI}{dt}=\sigmaE-(\ga"
Zhang Shuyi: "Wow, you are all so awesome."
Kyoto, in a courtyard room.
Xu Zhengyang looked at Lao Kong and others who were discussing on the screen with a pretentious air, snorted coldly, and then typed: "Lao Xu, what do you think?"
As a result, the group fell into silence.
Thousands of kilometers away, Xu Qingzhou laughed and said to himself, Old Xu, you are still pretending to be for your adoptive father even though you are so far away, it is embarrassing for you.
"Come in and eat some fruit." Wang Xiaping's voice came from the living room.
"Coming."
Xu Qingzhou got up. The old couple were watching TV in the living room, with a fruit plate on the table.
Looking at her son, Wang Xiaping said with disgust: "I just lie on a chair and bask in the sun. I think you shouldn't be here. You should be with the uncles and aunts in the community."
"Mom, you change your attitude too quickly. A few days ago, you told me not to be so busy." Xu Qingzhou sat down on the sofa. As soon as he stretched out his hand, Wang Xiaping slapped his paw away, "Wash your hands."
Xu Qingzhou finished washing his hands, came back, peeled an orange, and handed it to Ms. Wang and Lao Xu. Seeing them shaking their heads, he ate it himself and smacked his lips at the same time: "It's still comfortable at home."
"Oh, you have such a comfortable life at home, can you still manage to come back on the 20th of the twelfth lunar month?" Wang Xiaping rolled her eyes at him and said angrily: "You are so busy at a young age."
Xu Shouyun was watching the football match with his legs crossed and said without looking back: "I support Qingzhou on this point. As a boy, career is the most important thing."
"Haha, that's it for now, we'll have to deal with it later."
Wang Xiaping sighed and frowned: "Look at the old Zhang family's sons, they haven't been back and forth to celebrate the New Year in three or four years. Every time they celebrate the New Year, the old couple is deserted."
Xu Qingzhou raised his eyebrows and wisely remained silent. He always felt that the old couple were not interested in drinking.
"I heard from Lao Zhang that his son will come back this year." Xu Shouyun took a sip of tea.
"I also said I would come back last year." Wang Xiaping didn't believe it. She paused, sighed again, and said, "It's because I don't have any grandchildren, otherwise it wouldn't be so deserted."
"That's true." Xu Shouyun nodded in agreement.
Haha, I’ve seen Tuqiongdagger.
Xu Qingzhou broke off two slices of orange and threw them into his mouth, but still didn't pick them up.
Wang Xiaping continued to mutter: "And the son of Lao Wang's family, who is about to turn 30, is still wandering around all day without even looking for a partner."
"It's hard to find it now." Xu Shouyun sighed.
When Wang Xiaping spoke, she squinted at Xu Qingzhou: "Yes, I used to have high standards. I said I was not in a hurry when I was eighteen or nineteen years old, but now I am still an old bachelor."
Xu Qingzhou: "."
This fruit is tasteless.
(End of chapter)