"Okay, now that everyone understands this question, let's move on to question 5. ”

Cheng Nuo's eyes looked around the class and said with a faint smile.

"Come, students who are right in question 5, please raise your little hands!"

More than 30 people in the class reluctantly raised their hands.

"Okay, Jiang Qingqing, since you did it right, let's tell you about your steps to solve the problem. ”

............

After a few questions, Cheng Nuo completely repeated the previous steps.

Let the person who did the right thing raise their hand first, and then pick one of them to explain the steps to solve the problem. Then I kindly asked if there was anything I didn't understand.

If so, it's good! Just ask the student who is giving the lecture directly after class!

The mood of the whole class is really struggling now!

Your sister, Old Tang asked you to come to the substitute class so that you can give us a lecture.

Except let's raise our hands and call names. Nothing more. We did all the talking!

You say, what's the use of us asking you as a substitute teacher!!

I said before that if you can do it, don't beep!

It's really according to Cheng Nuo's gameplay, to be honest, I can really get on!

In the midst of a wave of complaints from the whole class. Cheng Nuo talked about the last question.

"Come, the student who got it right in question 21 raise his hand. Cheng Nuo asked.

Quiescence...... No one raised their hand.

But it's true that the whole class didn't deliberately go against Cheng Nuo. It's true...... Nobody did it right!

To be precise, except for Cheng Nuo, there were fifty people in the class, and none of the others did the last question correctly.

Looking at the scene in front of him where no one raised his hand, Cheng Nuo was indeed a little succumbing.

So he turned his eyes for help to Mu Leng, "Mu Leng, you ......"

"Don't look at me, I didn't do it right. Mu Lengqiao rolled his eyes vividly, not giving Cheng Nuo face at all.

Cheng Nuo was stunned, and a faint atmosphere of embarrassment filled the air.

"Ahem. Cheng Nuo coughed a few times and strode onto the podium. With a long sigh, "Ugh. I couldn't help it, I wanted to hide it, but I didn't expect that in the end, I still need to play!"

"Students, please keep your eyes open, don't blink, and see how the teacher and I can solve this problem in a few easy steps. Cheng Nuo picked up a piece of chalk and said.

The classmates were speechless for a while, but they were also very curious about whether Cheng Nuo could explain this question clearly.

It's not a skill to make it, but it's a skill to be able to explain a person who can't understand it!

The last question is a question about elliptic functions. The question is not difficult of all the finale questions, but it is not easy either. It's even more difficult to do it right without losing a point.

Cheng Nuo listed the graphics and known conditions on the blackboard. Then I found an open space on the blackboard, and while writing freely, I leaned over to explain to the students.

"The first question is very simple, ask for elliptic equations, just look at the known and unknown ellipse formulas, and then ........."

Let's go, let's go, in just two or three minutes, Cheng Nuo explained this question clearly. The students under the podium also nodded secretly, indicating that they had understood.

Unexpectedly, Cheng Nuo threw away the chalk that only had one head left, picked up a new one from the chalk box, turned his head and wrote a big "two" on the blackboard!

Now, let me tell you about the second solution to this problem. ”

Clause...... The second solution!

After listening to Cheng Nuo's words, the classmates couldn't help but grow into stunned mouths one by one.

And a second solution?!

Cheng Nuo ignored everyone's stunned gazes, and wrote while talking to himself.

By the time the second solution was finished, the entire blackboard had been completely filled by Cheng Nuo.

I saw Cheng Nuo erase the left half of the blackboard that was full of the first solution, and then write a "three" on the top.

There is a third solution!

The crowd felt numb. For them, being able to come up with a solution is already a scholar-level existence.

But Cheng Nuo is good, and he came up with three solutions at once! It's just ...... Terrifying!

Let's look at the third solution. Cheng Nuo smiled faintly and wrote the third solution on the blackboard.

At this time, the bell for the end of class also rang.

"Alright, that's all for today's lesson. Cheng Nuo threw the chalk on the podium, knocked on the blackboard with one hand and said, "Actually, I have come up with a total of five solutions to this problem, and due to time reasons, I can only tell you three." If you are interested, you can ask me after class!"

"Alright, that's all for today, class is over!"

Everyone is still shocked by the five solutions that Cheng Nuo said. So when Cheng Nuo's voice of "out of class" was heard, except for a few people, almost all the people in the class reflexively stood up and shouted neatly.

"Goodbye, teacher!"

In an instant, everyone's faces turned black again!

...............

"The sun is bright, the rain is falling in the west, I don't know when my sister's sweetheart will return......

After school in the evening, Cheng Nuo, who was in a good mood, rode his bicycle all the way and walked into the Zhuyuan community humming a song.

When Cheng Nuo passed by the second floor, he couldn't help but breathe a sigh of relief when he saw that the door of Fang Lian's house was locked.

Thinking of the delicate brooch, Cheng Nuo was heartbroken again......

Cheap mouths, it's all the fault of cheap mouths!

Thinking like this in his heart, Cheng Nuo walked into the house.

But as soon as he pushed the door in, Cheng Nuo felt that something was wrong with the atmosphere at home.

"Still don't have any clues?" Cheng Nuo, who was changing shoes at the door, heard his father sigh and said.

"Don't say it, it seems that Xiaonuo is back. Jiang Lan whispered softly.

The two immediately stopped discussing.

Cheng Nuo's brows furrowed slightly, and he walked into the living room with his schoolbag.

"Xiaonuo, you're back!" Jiang Lan's mouth barely squeezed out a smile. "Come, sit down first, and I'll go get you a glass of milk." ”

Jiang Lan got up and walked to the kitchen. Soon, he put a glass of milk in front of Cheng Nuo.

"Thank you, Mom!"

Cheng Nuo thanked him and drank the whole glass of milk in one go.

Because Cheng Yuanjin and Jiang Lan both had things on their minds, they were in no mood to speak. The atmosphere in the whole living room fell into a strange dullness.

There was only one television set, and the evening news was playing.

Cheng Nuo was also very puzzled, what was it that made the two of them look so sad.

Cheng Nuo couldn't help but ask, "Mom, did something happen?"

Jiang Lan smiled reluctantly, "It's okay, don't you still have homework to do, go back to your room and hurry up." ”

Obviously, Jiang Lan had no intention of telling Cheng Nuo about the matter.

Cheng Yuanjin also helped, "It's really nothing." Even if something happens, the two of us can solve it!"

Cheng Nuo sighed, and just as he was about to get up and go back to his room, a message broadcast on the news on TV attracted Cheng Nuo.

Here's a piece of news. At seven o'clock this morning, Qingcheng Bank, located on the Minjiang branch road, was robbed ......"