For a while, a math craze swept the class, and you could always see people studying math books.

As usual, Zhang Yumian reviewed English half an hour in advance and helped his friends with their studies at the same time.

Today it is Cheng Yao who will give the lecture.

Listening to the English words coming out of Cheng Yao's vocal cords one by one, Zhang Yumian couldn't help but think that he went abroad as soon as he graduated from high school, so he must have prepared for the language in advance.

Opportunities are reserved for those who are prepared. I practiced my spoken English for several years in a foreign company, and took the CET-4 and CET-6 in college, so I have a basic foundation in this field.

Now in the same environment with the same teacher, Cheng Yao's spoken English is very good. It is true that outstanding people shine wherever they go.

"Mianmian?" Zheng Yue waved a pen in front of Zhang Yumian's eyes. She had called him several times, but there was no response.

"Ah." Zhang Yumian came back to her senses and saw that they were all looking at her. She flipped through the book and asked, "Have you finished reading?"

Cheng Yao said "hmm". After he finished reading, he looked up and saw that her eyes were empty, as if she was thinking about something or in a daze.

"Sorry, I was just thinking about something." Zhang Yumian said, pursing her lips.

Then he stretched his waist and said, "Then let's continue."

After Cheng Yao finished speaking, Zhang Yumian felt that his foundation was very good, and there were some knowledge points that she had not thought of. After thinking it over again and again, she said: "Cheng Yao, your foundation is better than mine. You can learn other things in this half hour."

After she finished speaking, she secretly looked up and found that Cheng Yao was also staring at her. She looked away instantly, feeling inexplicably guilty. What was going on?

Cheng Yao: "I don't know all the phonetic symbols yet. Teacher Xiao Zhang doesn't want me as a student anymore."

Zhang Yumian felt something was strange after hearing this. She felt like a scumbag who abandoned others, and her tone made her sound like he was aggrieved.

How come this person has changed so much from before? Could it be that he is also slow to warm up and I was just not familiar with him before?

But this is not right. We were desk mates for more than a semester in the previous life. So it can’t be said that I’m slow to warm up to you. He was always cold to me at the beginning.

Cheng Yao looked at the person in front of him, the expression on his face changed again and again, his eyes rolled around, no one knew what he was thinking, he was waiting patiently to see what the other person would say.

Zhang Yumian quickly glanced at the two people next to him and found that they were reviewing the knowledge points they had just learned and were not paying much attention to the situation on their side.

She closed the book and placed her hands on the table, saying seriously, "That's not the case. It's mainly because Teacher Xiao Zhang has limited knowledge and can't teach you too much for fear of misleading you. If you want to learn phonetic symbols, you can listen to the tapes, where the teacher teaches more accurately."

Hearing this, Cheng Yao stopped turning the pen in his hand, and suddenly moved closer to Zhang Yumian and said, "I don't have a recorder."

Before Zhang Yumian could speak, he said, "I'll just listen while you tell them."

Just when Zhang Yumian was about to nod and say yes, Zhang Wentian suddenly said, "I have it at home. I won't listen to it anyway, so I'll bring it to you tomorrow. This way you can study other things in the morning and don't have to waste time with us here."

After saying that, he turned to Cheng Yao and raised his eyebrows and said, "No need to thank me, this is what I should do."

Cheng Yao placed the book in his hand heavily on a pile of books and said to Zhang Wentian, "Thank you."

Zhang Yumian gave Zhang Wentian a thumbs up in her heart and wanted to say that he did a good job.

Recently, because of Wang Shuxia, I have been quietly struggling fiercely with mathematics during self-study classes.

Zheng Yue has been racking his brains for a long time, but no matter how he calculates, the problem seems wrong. He is always just a little bit away from the correct answer. Finally, he decides to ask for help, "Mianmian, I have a dance class today and I need to finish my homework quickly. There are still some things I don't understand. Can you teach me?"

Zhang Yumian took the question, glanced at it, and finished the calculation on a piece of scratch paper.

He explained it to Zheng Yue step by step. In fact, Zheng Yue's previous steps were all correct, but she missed a condition at the end.

After listening to it, Zheng Yue suddenly realized, "Mianmian, you are amazing. What you said is much clearer than the following answers."

Zheng Yue hesitated and said, "Mianmian still has a few questions. Can you explain them to me again? Hehehe"

Zhang Yumian: "Of course, this way I can review and I don't have to study math when I get home."

Zheng Yue hugged Zhang Yumian's waist and said happily: "Mianmian, you are so nice."

There was still one question left to explain before the self-study session ended. Zhang Yumian wanted to continue, but suddenly she remembered that she was on duty today, and because the number of people had changed, the duty roster would still be implemented as before.

The person sweeping the floor with her was Li Ke's desk mate Zhou Wenlong. It looked like the problem could be finished within five minutes.

He turned to Li Ke and said, "Li Ke, please tell your deskmate to just clean up the two rows over there, and I'll do the rest."

“Let’s talk about this question tomorrow, Mianmian, otherwise you’ll be taking out the trash by yourself later.” Zheng Yue originally wanted to help with the duty, but when she thought about her dance class today, time didn’t allow her, so she had to put this question off for tomorrow.

Zhang Yumian thought this was fine, so she stood up and started sweeping the floor.

Cheng Yao was the first to speak up, "I'll be on duty. I'll be on duty for you this semester."

Zhang Yumian naturally refused, how could she ask others for help. But Cheng Yao also insisted, "We agreed on this at the beginning."

Zhang Yumian thought carefully about the three agreed words, and suddenly remembered that when he was working on a construction site before, he had agreed to take turns on duty after each meal.

I probably only worked there for half a month, taking turns to do duty once for a meal, and that was not even a whole semester.

The reason I said that was that I didn't want him to refuse, not that I really wanted him to be on duty.

Zhang Yumian said, "It doesn't seem to be as long as a semester. Let me do it this time. If I need anything in the future, you can help me." After saying this, Zhang Yumian felt that he was really smart. Generally speaking, nothing would happen. He neither broke his promise nor "took advantage".

She always felt that asking Cheng Yao to help on duty was taking advantage of his labor.

Cheng Yao said calmly: "The rest is interest." Then he walked towards the tools.

Zhang Yumian was still thinking about "interest" as she looked at his back. When did she ever say she would charge interest?

Zhou Wenlong looked at Cheng Yao who was holding a broom and asked, "Isn't it Zhang Yumian who is on duty with me? Why are you sweeping the floor?"

Cheng Yao threw down the words "pay off the debt" and started to work with a broom.

Looking at Cheng Yao who was already working, Zhang Yumian could only explain to herself in her heart that this was called labor exchange, not taking advantage. Cooking was also a physical job in the beginning, so she just considered it as completing her duty ahead of time.

Thinking of this, I felt a little more at ease.

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