The next day, Lin Chaoxi got up very early. Thanks to Pei Zhi's Transformers watch, she did not repeat the mistake of the first day.

Rushing downstairs, Pei Zhi was still sitting on the small sofa, waiting for her to go to the cafeteria to work. His seat was exactly the same as yesterday.

After leaving the reading room the night before, they read for a while in the small living room downstairs. Before they knew it, it was already ten o'clock. In the end, they were sent back to their rooms by the dormitory manager who came to patrol.

"Good morning." Lin Zhaoxi deliberately tried to greet Pei Zhi in an energetic manner.

But for the first time ever, Pei Zhi raised his head and yawned, then raised his hand as a greeting to her, and seemed too sleepy to talk.

"What time did you go to bed yesterday?" Lin Chaoxi and he walked on the road facing the morning light. There were only squirrels and birds around them, not even a human figure. It was extremely quiet.

"A little bit?" Pei Zhi rubbed his eyes.

"Why so late?"

"Hanajuan is reciting."

"What!" Lin Chaoxi was shocked. Although Huajuan said he was leaving, his body was actually very honest and he recited his lessons until 1 a.m.

But what’s so good about memorizing math?

"Memorize the formulas that might be tested today." Pei Zhi thought for a moment and said, "Isn't it amazing?"

“It’s amazing!”

"But will his endorsement affect your sleep?" Lin Chaoxi asked.

"Lu Zhihao is here too, asking questions." Pei Zhi yawned again, his voice full of fatigue.

"That's against the rules. If the teacher catches you, you'll be punished!"

"Tsk." Pei Zhi raised his index finger, asking her to speak more quietly.

——

6 o'clock in the morning, in the cafeteria of Oasis Base.

Some were steaming buns, some were cooking, the kitchen was already busy, steam was rising, like a huge factory. Lin Chaoxi and Pei Zhi stood at a small door in the kitchen, facing the various kitchen tables and huge stoves from the front to the end, and swallowed their saliva.

The canteen supervisor from yesterday stood in front of them with her hands on her hips and said, "Go, or work with the cleaning lady who took you there yesterday. Clean up the outside of the canteen first and wait for it to open."

"Okay!" Lin Chaoxi turned his head, and Pei Zhi followed him.

But the aunt said, "Wait a minute."

Pei Zhi stopped and Lin Chaoxi turned around.

"What can you do with your small body?" Auntie looked at Pei Zhi lovingly.

Lin Chaoxi also heard her aunt say this to her yesterday, but the tone she used to say it to Pei Zhi today was completely different! It was like she was being taken away from her!

"Do you like eating bread?" Auntie asked Pei Zhi, "Come, come, auntie will take you there and find an uncle to teach you how to make bread, okay?"

Lin Chaoxi shuddered.

"I'd better clean the outside with her." Pei Zhi said a little embarrassedly.

"That won't work. The teacher asked you to come here, so you have to obey the instructions!" Auntie took Pei Zhi's hand and pinched his porcelain-white face with her other hand. Her smile was full of indescribable kindness. Without further ado, she took him to the kitchen.

Hey, isn't your bias too obvious?

Lin Chaoxi stood there, shocked.

——

From 6:00 to 7:30, more and more people came to the cafeteria of the Oasis Base, and Lin Chaoxi was very busy. She wiped the table, collected the plates, and when she saw someone accidentally spilled soup on the floor, she would change another rag to wipe it.

Lu Zhihao and Huajuan said they had to go to the classroom early to read, so they didn't even come for dinner, so they asked them to bring steamed buns.

"Auntie, I don't want porridge anymore. I want bread and eggs to take away."

Passing by the lunch window, Lin Chaoxi saw a little girl from their senior class also buying things. The little girl was carrying a schoolbag and took out a plastic bag to put the food handed out by the aunt into the bag.

"Zhang Xiaocao, if you don't drink some soup, will you get dry?" Lin Chaoxi patted the other person's shoulder and asked.

When Zhang Xiaocao saw her, he yawned and then shook his head: "My mother brought me some milk. I can eat these on the way. It's convenient."

Lin Chaoxi took a quick look and found that all the children in their Mathematical Olympiad summer camp, no matter how old or young, basically just bought their breakfast and left in a hurry, as if they could seize the time to read for one more minute.

Bread was sold the fastest, and another cart came out from the kitchen. Next to the pastry chef in a white shirt, there was a little boy pushing the cart slowly. It was Pei Zhi.

The pastry chef and Pei Zhi worked together to put the bread on the shelf. The chef rubbed Pei Zhi's head kindly and took a loaf of bread from the shelf for him.

Lin Chaoxi was furious. He stuck to the window and made eyes at Pei Zhi.

Pei Zhi took the bread, glanced outside the window, walked slowly towards her, and stopped across the glass window.

Because she was close, Lin Chaoxi could clearly see a large patch of white flour on the left side of his cheek. Through the window, she poked Pei Zhi's face with her finger.

Pei Zhi was about to hand over the bread with one hand, but he could only rub his face with the other hand, which made the flour marks bigger and bigger.

Lin Zhaoxi couldn't help but smile with a schadenfreude.

Pei Zhi's bread was halfway delivered to her, and just as she was about to take it, the bread shrank back.

Why do you hold a grudge so much? Lin Zhaoxi glared at Pei Zhi, but immediately stopped smiling and stood still with a serious look.

Inside the window, Pei Zhi saw that her attitude had straightened out, so he reached out and tore off half of the bread before handing it out.

The bread was golden and crispy, with the aroma of freshly baked butter. Lin Chaoxi took it and took a big bite at the same time as Pei Zhi through the glass window.

——

Sleepiness is contagious.

After they "finished their work" in the cafeteria, they drank a bowl of porridge and ran to the classroom. When they entered, they found that half of the classroom was occupied.

At 8:30, Jie Ran walked into the classroom, holding yesterday's test paper in his hand. Looking around, he saw only yawning mouths and hazy eyes. The whole class seemed to be possessed by sleepiness. Seeing this, Jie Ran laughed: "What did you do last night?"

"Read~ a book~" all the children in the class said in unison.

"I thought you guys were up all night watching football."

"No~"

"Yesterday, Germany won 1:0. Do you want me to tell you about the game?" Xie Ran held up the test paper. Through the white paper, you could see the bright red x on the last paper, which belonged to someone else.

"Teacher, please hand out the papers quickly."

"Stop talking, stop talking, there's no time." the students shouted.

Jie Ran smiled even more happily: "Why are you all so eager to study? You have never studied so seriously before, right?"

"Hand out the papers quickly!" the students slammed their desks and shouted, not afraid of Jie Ran at all.

——

"Wang Feng, 68."

"Lu Ming, 72."

"Zhang Liang, 91."

"Chen Chengcheng, 66."

At the podium, Xie Ran announced the results slowly. When he first reported 68, some students sighed with regret. But soon, when Zhang Liang's results were announced, the classroom fell silent.

An expression of disbelief appeared on the face of Zhang Liang, the little academic master, which had been full of complacency.

"The leader of the first group, please come up and collect the test papers." After Xie Ran finished reading, he took out the test papers of four people and said.

Zhang Liang went up to the stage with a dark face, took the test paper, and was still flipping through it when he came down. He took out his own paper first, and when he gave the last paper to Chen Chengcheng, who scored 66 points, Zhang Liang, the little academic bully, had a very obvious expression of disdain.

They whispered a few words, Zhang Liang's face looked dark, and the boy named Chen Chengcheng turned his head to look out the window. Lin Chaoxi always felt that he seemed to be crying.

The first group is basically the strongest group, with an average score of 74.25, which is not even good.

Xie Ran deliberately dragged on for so long before class, probably because he felt that this exam was too terrible, so he deliberately used livelier atmosphere to make everyone relax a little.

Below the first group is their second group.

Lu Zhihao lay on the table, closed his eyes tightly, and almost covered his ears to avoid listening to the results. Lin Chaoxi was also very nervous, her heart was beating very fast, and she immediately withdrew her attention from Chen Chengcheng. What if she didn't pass?

She began to worry.

"Lu Zhihao, 62." Xie Ran read out. Little Lu was stunned for a moment, then began to rub his face, feeling both relieved and sad.

"Huajuan 45." After hearing this, Huajuan rubbed his hair a few times.

"Pei Zhi, 97."

Lin Chaoxi's heart skipped a beat. It was all over. Pei Zhidu didn't get a perfect score.

"Lin Chaoxi, 98." Xie Ran continued to read.

After her grades were announced, the whole class fell into a brief silence, as if all the air had been sucked out.

Lin Chaoxi's first reaction was, she got the question about Fermat's Little Theorem right? She basically guessed and guessed, how could she get it right?

Then she realized that she seemed to have scored higher than Pei Zhi?

The class erupted in low exclamations, and eyes were directed from all directions, with suspicion, amazement, envy...

As if to say, how is this possible? How could she have done so well in the exam?

Lin Chaoxi was also confused for a while, until Jie Ran said, "The leader of the second group, come and get the test paper."

Hearing this, the four members of their group looked at each other in bewilderment. Hua Juan winked at her, Pei Zhi nodded, and Lu Zhihao pushed her and said, "Go."

Under the watchful eyes of the crowd, Lin Chaoxi walked up to the podium and took the test paper. She became sober instead.

"I did well in the exam." Xie Ran said.

"Thank you, teacher." Lin Chaoxi flipped through the test papers and returned to his seat. He took a quick look at everyone's answers.

Pei Zhi actually got all the answers right, but his thinking in organizing the knowledge points was not as clear and accurate as hers, so he lost one more point than her.

As for Lu Zhihao, he had a good grasp of the knowledge points of elementary school Olympiad mathematics, but he was helpless when it came to content that was a little bit beyond the normal level of difficulty.

As for Huajuan, Lin Chaoxi was shocked when he saw that Huajuan chose c for all the multiple-choice questions.

"Can you please not choose C in the future?" She handed the test paper to Huajuan and said in a low voice.

"Should I choose D?" Huajuan asked.

"The probabilities of the four options are the same." This was Pei Zhi's answer.

Lin Chaoxi shook his head: "Remember this, if there are three long and one short, choose the shortest; if there are three short and one long, choose the longest; if they are of different lengths, choose B; if they are uneven, choose D."

"No problem!" Hanamaki smiled.

Lu Zhihao also let out a "puff" sound, raised his thumb in admiration, and temporarily forgot about his own performance.

This was probably the most relaxing moment of the day for them. After all, no matter what, their group's average score on the first day was 75.5 points, exactly one point higher than Zhang Liang's group. Is there anything more joyful than watching Zhang Liang suffer?

——

But the moment of relaxation was only short-lived.

Three classes in the morning.

Xie Ran spent a whole class discussing yesterday's test paper. The whole class was hit hard by the results and felt very depressed.

The second class was about the extension of the content, mainly some junior high school math Olympiad knowledge points, and the time was very tight. Xie Ran focused on the content of congruence and Fermat's Little Theorem that was tested yesterday.

In the third class, Jie Ran started to talk about what he had asked them to sort out yesterday, namely the knowledge structure. But compared to expanding the content, the children were more confused about what they were talking about.

Xie Ran rested his hands on the podium and said casually, "What do all the chapters marked with '1' have in common? After yesterday's hard study, what new discoveries did you make?"

"It has something to do with numbers." All the students said in unison.

"Remove the word," Xie Ran said. "To be precise, it's a number."

"Who can tell me what is the difference between numbers and numerals?" Xie Ran asked.

The elementary school students looked confused. This was a completely new perspective for them. Numbers and digits were different. They had never made this distinction before, although this was indeed the most important thing to understand before learning mathematics.

Jie Ran said straightforwardly: "Specifically speaking, there are four main differences between numbers and numerals. The first is..."

Jie Ran spoke very fast, and most of his lectures were theoretical. As a top student in the Department of Mathematics at Sanmi University, he was far superior to these elementary school students, and what he explained required even more abstract comprehension from the students.

Lin Chaoxi observed and found that except for a small number of children who could roughly understand the difference he mentioned, most students could only concentrate on copying the blackboard.

"After we have a basic understanding of natural numbers, we will talk about number systems. The sequence of natural numbers is endless. After any natural number, we can write the next natural number - n + 1... Most of the number sequence problems you encounter, such as questions like what is the first digit, can be attributed to the study of number systems..."

As Xie Ran was talking, he wrote down the content on the blackboard. Lin Chaoxi casually circled a key word. She gradually found that what Xie Ran said was very basic and there was no problem at all. It was much better than those teachers who started by explaining formulas.

But because it was too basic, it was far from what the children usually learned. Lin Chaoxi thought that it would be better if he slowed down and explained it in a simple and easy-to-understand way. But there were too many knowledge points to sort out, and Jie Ran had no chance to stop and explain in detail. He could only keep pushing the progress back.

The progress was really too fast. Even though these kids in the class already had a good foundation in math, the expressions on their faces were becoming more and more serious.

All the kids' heads were about to explode.

Fortunately, at the end of the class, Jie Ran handed out a standard answer sheet for yesterday's knowledge points, which was like a life-saving straw. Lin Chaoxi read it carefully and found that it was more like a mind map later. It was detailed and gave the children a new understanding of how to organize knowledge points.

"Monitor! This is a secret book!" She was about to tell Lu Zhihao about this material when the bell rang. All the children in the class stuffed the paper into their schoolbags without even looking at it, picked up their bags, and rushed to the reading room.