Problems are like candied haws, once one is solved, there is another one below.
Lin Zhaoxi took a bite, licked the candy on her finger, and said to Bao Xiaomeng, "This is it."
They were standing on the old street near Yongchuan Middle School, and there was an old bookstore in front of them. But instead of calling it a bookstore, it would be better described as a recycling bin.
The door is covered with old books, and when the wind blows, it will cause ripples and dust on the pages. The shop was very dark, full of crooked bookshelves.
Lin Zhaoxi chose to buy books here instead of Xinhua Bookstore, because the boss wrote a sign "Tongtong five yuan" on the door.
"Junior high school seems to have a lot of content, but in fact there are not many particularly difficult things. Mathematics, physics and chemistry are all about the basics, and you can definitely learn them with your ability." Lin Zhaoxi took out two books, flipped through them, and handed them to Bao Xiaomeng .
"Where did you see that I can definitely learn it with my ability, I haven't even passed the exam..."
"The word 'learn' refers to understanding. Junior high school knowledge itself is very basic. As long as you can truly understand what those formulas and theorems are saying, it is really not difficult to get a passing score."
"Okay!" Bao Xiaomeng nodded.
"But my English is not good either."
"This is the easiest." Lin Zhaoxi took out a book from the shelf, "Just memorize it."
It was "New Concept English Volume Three".
Whether in the past or now, there are generally only two things when English masters share their learning experience: 1. Memorize a dictionary, and 2. Memorize new concept English.
Many people know that memorizing New Concept English can greatly improve their English level, but there are very few people who really memorize it from beginning to end.
"Recite... finished?" Bao Xiaomeng stumbled.
"Um."
"Have you finished reciting it?"
"No." Lin Zhaoxi was very honest.
Bao Xiaomeng's face drooped, and after a while, she said, "Then I'll try."
Lin Zhaoxi was very happy. Those who can say "I will try" are much better than those who said "I can't" at the beginning: "Boss, do you have this tape?" She pointed to the tape in Bao Xiaomeng's hand. book, shouted at the boss.
—
The most scarce thing is always money, and the most insufficient thing is always time, and it is the same for Lin Zhaoxi and Bao Xiaomeng.
Junior high school students didn’t have much pocket money at that time, and their training team provided food and accommodation, so before leaving the house, Lao Lin gave her 1,000 yuan to settle the matter.
She wanted to surf the Internet in the library before, and directly charged 500 yuan into the network card. After buying teaching aids for Bao Xiaomeng, her pocket money was only 415 yuan left. The library has one card for each person, and they can also scan their faces, so this card cannot be used by Bao Xiaomeng.
When she has no money, of course she can call Lao Lin for help, but Lao Lin will definitely come to deliver the money in person, and if she meets Lu Zhihao or Chen Chengcheng, Lao Lin will definitely know about her recent situation. .
She couldn't tell Lao Lin what she was doing, she was afraid of encountering a scene where she had to lie to Lao Lin, and she was even more afraid of Lao Lin's comfort to her when she knew her grades were not as good as before.
So as long as she can survive, she will not speak to Lao Lin.
"I can only give you one hour a day, half an hour to teach you the basics of the subject, half an hour to lecture on the topic, and you have to study the rest by yourself."
After a happy and indulgent day, Lin Zhaoxi resumed her routine of getting up at 5 o'clock every day.
It was dawn, Bao Xiaomeng rubbed his eyes on the bed, Lin Zhaoxi put twenty yuan change on the table.
"Give it to me?" Bao Xiaomeng got up with a grunt.
"yes."
"Just eat, I don't need so much in a day..."
"It's not for you to eat. Didn't we agree yesterday that you're going to study the basic courses of junior high school online? It costs 3 yuan an hour to surf the Internet. You need 18 yuan for 6 hours. The remaining 2 yuan is for breakfast, lunch and dinner. I'll bring it back for you!"
"I can buy two big steamed buns for that two dollars, enough for dinner!"
Lin Zhaoxi rubbed her head: "No, how can my baby not be full!"
Bao Xiaomeng blushed instantly, looking at the cute little girl, Lin Zhaoxi dragged her schoolbag and ran out of the garage.
The morning light is faint, and the sun is faintly showing power at five o'clock in the morning, which indicates that today is another high temperature day.
The cohabitation life between her and Bao Xiaomeng also kicked off.
—
Lin Zhaoxi had calculated before that if Bao Xiaomeng spends 20 a day, her money can last for 20 days, which is almost enough for Bao Xiaomeng to finish the basic knowledge of junior high school.
Therefore, as long as she saves half of the three meals a day, she can live with Bao Xiaomeng, eating less is considered weight loss.
The issue is…
Dreams are beautiful, but reality is hungry.
She bought an extra steamed bun for breakfast, and after lunch, she really wanted to eat roasted chicken legs.
But thinking about the fact that the training team gave them 10 yuan a day for meal subsidies, the chicken legs cost 4 yuan, and she had to eat with Bao Xiaomeng at night, so she didn't want to.
At 8 o'clock in the evening, Lin Zhaoxi took the lunch box back to their small garage, Bao Xiaomeng was reading a book on the small table in the room, the small electric fan was whistling, but she was still sweating profusely.
Lin Zhaoxi opened the lunch box and pushed it in front of Bao Xiaomeng.
"Have you got a meal yet?"
"Eat it, this is for you."
"I think… "
"What?" Lin Zhaoxi looked up at her.
"Have you ever watched the Baogong case? You are a bit like Qin Xianglian in it. You don't eat or drink for your sweetheart's scientific research..."
Lin Zhaoxi's chopsticks, which were holding the vegetables, slammed down: "What kind of metaphor are you talking about? I take back the words that your Chinese is not bad!"
She felt wrong after shouting, and then shouted angrily: "And I'm the boyfriend!"
—
Lin Zhaoxi may be encouraging Bao Xiaomeng, but in fact, Bao Xiaomeng is also encouraging her.
It was still the dog days, and the classroom at noon was too hot to breathe even with the electric fan turned on.
There is a copy of "Probability Theory and Mathematical Statistics" on the desk. Lin Zhaoxi does not have the impetuous mood when he read it for the first time.
The last time I read this book, because the version on Lao Lin's book list was borrowed, she couldn't calm down when reading it, as if without Lao Lin's guidance around her, she didn't have the confidence to read it down.
But now, thinking about the little girl in the broken garage who was even less helpful than her, she suddenly gained confidence.
She pulled out a tissue and wiped the sweat off her arms. The moment he opened the book, Lin Zhaoxi somehow felt that the answer he was looking for might be hidden in this book.
—
The days rolled forward like a snowball.
Although the food is not very good, the days of cohabitation with Bao Xiaomeng are still very interesting.
Rainstorms often come suddenly in summer, and it is very rare for Lin Zhaoxi to experience the rain leaking in her house again.
The first time she came to the small garage, she wondered why the ground was so wet. Now when it was raining heavily outside the house, and a drop of rainwater dripped on her forehead, she finally found the reason.
Bao Xiaomeng jumped up to move the table, Lin Zhaoxi looked up to see where the rain was leaking.
The place where they live is too small, only the bed is not leaking, and moving the table seems to be unable to solve the problem.
At this moment, a thunderbolt flashed outside the house, the thunder exploded, the light bulb flickered, and then went out.
It was normal for a power trip after a lightning strike, but at that time Lin Zhaoxi and Bao Xiaomeng were standing face to face, and couldn't react for a while.
There was another thunderbolt outside the window, illuminating their faces looking at each other.
"What should I do?" Bao Xiaomeng asked.
"It seems that there are frequent power outages here. Go ask Third Aunt if she has any candles?"
"good."
Borrowing the light of the street lamp and the thunderbolt, Bao Xiaomeng walked to the next door. When she came back, she had a candle and a lighter in her hand.
On the table where it was still dry, Lin Zhaoxi lit and set up the candle, and when she turned around, Bao Xiaomeng actually brought a small mirror and placed it opposite the candle.
Lin Zhaoxi was shocked.
"Didn't the textbook say that this is how Beethoven saved his mother when he was a child?" Bao Xiaomeng explained to her seeing her stunned.
"That's Edison..." Lin Zhaoxi thought for a while and then said, "And the light from the kerosene lamp, no matter how refracted it is, cannot perform surgery."
—
The conditions of the rental house are tough, but for Lin Zhaoxi, having a place where he can sit and read at night is actually much better than the toilet in the dormitory.
At 9 o'clock in the evening, she would leave the classroom, go to the dormitory to sign in, and then slip out to the rental house to find Bao Xiaomeng.
The school is very safe, and there are various small stalls on the long way out of the school gate. She always inhales the aroma of various foods and runs quickly across this grueling road.
Sometimes when she was very hungry at night, she and Bao Xiaomeng would borrow the third aunt's stove to make some dried noodles.
A handful of dried noodles for 2 yuan can be used as a night snack for a week. Add some oil, salt, sauce and vinegar, and you can mix a very delicious taste.
She was flipping through the book, sucking two mouthfuls of noodles, and the mosquito coils in the house were very thick. A large area of eczema developed on her elbow, which may be due to the too hot summer, or her hands have been in contact with the table for a long time. In short, it was red and swollen. Every time she wrote a few words, she had to scratch it, and the skin was still itchy.
"Why don't I tie your hands up." Bao Xiaomeng put down the pencil and went straight to find the rope.
"No, no, I'm working on a problem." Lin Zhaoxi wrote a p in the exercise book.
This is a common question doctors ask when diagnosing disease. According to her usual speed of doing questions, she should be able to write immediately.
But now, half of the workbook in front of her has been written. From solving problems mechanically with formulas to now, she has a deeper understanding of some problems that she thought she already understood.
For example, the Bayesian formula has a philosophy behind it.
That might not be the right way to say it, but she spent four years studying it in college and couldn't resist using it to analyze things.
Classical probability says that based on a large number of experimental observations, it can be inferred that the probability of tossing a coin is 50%.
This is an objective result.
But Bayesians believe that probability is not objective, but actually subjective.
You don't need objective evidence, you just need to generate an estimate first, and then constantly revise it through actual observation.
In order to predict car accidents, her previous framework plan was: Divide the map of Anning City into many small grids, calculate the accidental probability table of small car accidents in each grid based on the previous statistical results, and then analyze Lao Lin's daily behavior habits to guess what happened to Lao Lin that day. Where is the crash most likely to occur.
But using Bayesian inference, after evaluating each small cell, she can observe the traffic conditions of the day, and combine with Lao Lin's action route to continuously correct the probability map and get the time and place where Lao Lin is most likely to encounter a car accident.
The mosquito-repellent incense at the feet was burning a little red, and Lin Zhaoxi took a deep breath.