Xin Zhai

The car window was half open, and the wind blew in. As the boxwood trees passed by the roadside, the air also hummed.

Tong Yan's voice was not loud, but it was enough for him to hear clearly.The driver didn't respond.Ye Li bowed his head to the right, and saw Tong Yan closed his eyes, maybe he was too drunk and talked drunk.

Ye Li didn't respond, and happiness overflowed from his beating heart.He turned his head and faced the car window, and saw his uncontrollable smile reflected in the car window.

The book says that there are many kinds of smiles, which will affect different muscles on the face, and the types of smiles can be judged through rigorous and detailed analysis.Ye Li used to think it was unbelievable, but now he believes it.

In this life, there will be no second person's drunken words that can make him laugh like this.

Since attending Xiao Meng's wedding, Tong Yan's teacher-student relationship quickly became public, and the whole school was talking about it.In the mouths of the students, apart from Tong Yan, the most discussed person is not Ye Li, but the liberal arts student nicknamed "A Gu".

Most of the girls didn't know why he was called by this name, anyway, it was passed around and everyone called him that.

It is said that he has changed four or five girlfriends in the past six months, Guang Yeli, apart from the last time in a restaurant, he also met him walking with two different girls in school.In short, every time I see him, there is someone to accompany him, and every night when I go back to the dormitory, there must be his commanding voice in the room, and sometimes even call from morning to night.He asked Shi Jingchen how Ah Gu managed to fall in love and play crazy games at the same time. Shi Jingchen said that every girlfriend of his would protest, and Ah Gu's original words were "falling in love is far less interesting than playing games".

"But he seems to be very nice to his girlfriend." Ye Li asked.

"Get used to it." Pu Liang said.

Shi Jingchen clicked his tongue: "I still think he treats me very well!"

As a result, Ah Gu seemed to become a little wild horse, and when he got out of his stiffness, he aroused the endless fighting spirit of the girls.

Although Ye Li has not had any contact with A Gu in the past few months, A Gu appears in his daily life almost every day.Then one night, when he returned to the dormitory after nine o'clock, when he opened the door, he saw Ah Gu sitting in front of Shi Jingchen's computer playing games, with several boys surrounding him.

When Su Xiaoqian was here, he would come to their dormitory from time to time, but now it has been almost a year, and this is the first time he has seen him in the dormitory.

Ah Gu nodded at him, then immediately stared at the screen again, tapping with his left hand.

"Damn it, his stick belongs to the sixth son of the temple? It's really impressive." Shi Jingchen said.

Ye Li glanced at his computer, there were several people fighting on the screen.He didn't quite understand either, he only saw fireballs flying all over the sky.A Gu's perspective has been following a skeleton-like person on the opposite side. The skeleton is holding a huge staff with a raging flame burning on the top, which is very eye-catching.

Ye Li took another step closer and saw that the skeleton mage's name was "Cold Ruo Bingshuang".

A Gu said at this time: "The drop rate is very low."

"If you lose it, you want it. It's a status symbol!" Shi Jingchen said again.

"Give it to Liangliang first, this stick is the best for healing."

Shi Jingchen said anxiously: "Tell you, the only difference between you and the boss on the other side is in equipment!"

As soon as Shi Jingchen finished speaking, a big fireball flew towards Shou Yangu's face.

"Liangliang adds blood." Ah Gu snorted, "Is he not as good as me?"

Zhou Lei interjected later: "Absolutely not as coquettish as you."

"Hit their priest, the one in the streamer robe!" Ah Gu shouted suddenly.

At this time, someone in the opposite dormitory responded: "The 'confession'?"

"Yes." Ah Gu shouted, without stopping the movement of his hands, and whispered again, "This priest has been in the group battles these few times, and his position is very concealed."

Ye Li looked at it for a while, then went to the next dormitory to say something.When he came back, Ah Gu had already stood up. Seeing him coming in, he walked over and said with a smile, "I want to ask you for a favor."

"What's the matter?" Ye Li asked.

"Teacher Tong...is there a school-wide elective course this semester?"

"Yes, "Sensor Technology." Ye Li said, "What's wrong?"

"Well... You know our major requires 10 credits of elective courses in science and engineering. I have a younger brother, so I took this course from Teacher Tong."

"Oh."

There are indeed many students from foreign departments in Tong Yan's course this semester.Anyone who knows him knows that he is strict, but he doesn't like to choose.But Tong Yan didn't consider the students' uneven science and engineering background at all. The lectures were taught in the same way as the professional courses in the department, and the speed was just as fast.

"He is learning in a fog, and he failed the midterm exam, and now it's the end of the semester. I chatted accidentally that day, and he said that he was most worried about failing this course." A Gu asked, "Mr. Tong, the elective course will give Isn't it human?"

Ye Li nodded: "It seems that five of them were hung up last year."

"Oh...so I want to ask you to help him. Give him lectures or something." A Gu smiled embarrassedly, "He went to the question-and-answer class and said that Mr. Tong spoke too fast, so he couldn't understand, and he didn't dare Asking too much. Maybe the students in our department...have poor foundation in science and engineering..."

"That's no problem. What's his name?" Ye Li asked.

"It's called Kangle. She looks like a girl, and she is very shy. She said that she always sits in the last row in class, afraid of being called up to answer questions."

Ye Li agreed.Ah Gu blinked, and smiled mysteriously: "If it's possible...can you set up exam questions or something?"

Ye Li looked at him.It's not like Ye Li didn't think about Tong Yan's set of exam questions. He tried to ask it once in the last semester, but Tong Yan said "no way".

Although he has no taboos when acting as a boy friend, he dare not make mistakes when playing the role of a student, and he is embarrassed to insist on going through this kind of back door, after all, it is a shameful thing.

"Exam questions... I don't know either." Ye Li smiled and whispered, "He won't tell me."

Ah Gu chuckled: "How could it be? He dared to fall in love with you and made it public. He would agree to whatever you asked him to do."

Ye Li was taken aback, then rolled his eyes: "No, he's not that kind of person."

"Okay, then treat me as nonsense." A Gu suppressed a smile and said, "Then you can help Lele talk, please. He is very thoughtful and has never failed a class. Now his mind is full of sensors. But you can't learn."

Ye Li nodded: "You can rest assured. I will definitely give him a lecture."

"I'll treat you to dinner later!"

When Zhou was in class, Ye Li entered the big classroom and looked in the last row. Sure enough, there was a boy sitting next to the aisle, wearing a plaid shirt, white and thin, with a very handsome face.At first glance, Ye Li almost thought it was a girl.

Lele also spoke in a soft voice. When she heard that A Gu had approached Ye Li, she was a little surprised: "Senior brother really sought you? I thought he was talking casually."

"He even asked me to help you formulate the questions." Ye Li simply sat down beside him.

"I just mentioned it a few times, but I didn't expect him to be so caring." Lele said with her head down, "No wonder they all said that if you have any difficulties, you should go to the senior brother."

Ye Li chatted with him a few words, and saw that Tong Yan had already walked in through the front door.

The classroom was quiet, Tong Yan looked around, but he might not have noticed him, his eyes swept from front to back row by row.Ye Li straightened his back and smiled at Tong Yan.

Tong Yan caught a glimpse of him, lowered his head to open the book, turned around and pulled down the blackboard.

"The dynamic characteristics of the sensor, step response." Tong Yan said while drawing a picture on the blackboard, "When the input is a step function..."

Lele asked in a low voice: "What is a step function?"

"Just give a 1."

"Give a 1?"

Ye Li thought for a while, this seems to be mentioned in the basics of circuits?Or did Dawu also talk about it?He's a little more sympathetic to Lele now.I took a class from Tong Yan, probably the difficulty is similar to his learning quantum physics or random processes?

After Ye Li talked to him several times, he finally understood that with Lele’s foundation, it’s basically meaningless to go to Tong Yan to answer questions. He didn’t understand many conceptual things, and the formulas were memorized by rote. We need to start with college physics. .

But none of Lele's classmates took this course. He didn't even have to copy his homework, and he probably didn't get enough grades in his homework. He even got a 51 in the midterm exam.Ye Li decided for him, in this way, at the end of the semester, he must score at least 70 points to pass.

Tong Yan doesn't give any more points, 75 points is best to be on the safe side.

75 points.Ye Li can actually find out the key points for him, and then give him homework questions.But the problem is that Lele can't be flexible, and Ye Li can't guess the specific type.If Tong Yan changed the title slightly, Ye Li worried that Lele wouldn't count.

Now he feels that Ah Gu really understands Lele.Ye Li thought it would be easy to raise points for him, but it was 100% guaranteed, so it seemed that he only had the idea of ​​taking the exam papers.

Seeing that the exam week was getting closer, Ye Li was so worried that he went to bed at night thinking about it.He had seen Tong perform exam papers before. He wrote them on paper first, and then typed them into the computer after revision.So Ye Li ran to Tong Yan's office these days when he had nothing to do, delivering things, cleaning, and chatting with Lin Li, which made Tong Yan feel a little uncomfortable.

"Are you free these days?" Tong Yan walked in after the meeting and saw Ye Li cleaning the table for him.

"what?"

"Are you still going to Zhou Jing's side?"

"Let's go. Isn't it the end of the term? Teacher Zhou told me to review steadily."

Ye Li said while stacking the documents and papers on his desk.With his back to Tong Yan, he consciously read the words on the paper when tidying up, and when he encountered something written by Tong Yan, he would take a second look.

At this moment, Tong Yan answered another landline call.Ye Li put all the messy papers together, but still got nothing.He walked to the table next to Tong Yan's seldom used table, and suddenly found the textbook "Sensor Technology" on it.

Ye Li opened the book and found two pages of A4 paper with a few lines written on it.

"1. What are the dynamic characteristics of the sensor? What is the significance? Please give a brief description.

2. Briefly describe the working principle of the electromagnetic damping sensor.

3.

"

When Ye Li saw it, his heart was pounding.He memorized the previous two lines in his mind, and secretly slandered that Tong Yan actually took the exam... short-answer questions? !abnormal!

After these two lines, there is a part of it empty. The following is a calculation problem, calculating the sensitivity. Just as Ye Li was about to look at the sensor type on the picture, the paper in his hand was suddenly taken away.

"Don't watch what you shouldn't." Tong Yan said behind him.