The rest of Xu San didn't look at it much.

Just kidding, this is high school winter vacation homework, even if Xu San can do it, he can't finish it after staying up for two nights.

"I took a look at it, including the questions you don't know, your trigonometric functions are very poor, and it can be said that there is no introduction at all."

"It's me who is stupid! I can't comprehend it at all. Song Chunlin said ashamedly.

Xu San pinched his head vigorously, and after a long while, he said slowly: "Trigonometric functions are functions, quadrant sign coordinate notes. Function image unit circle, periodic odd and even increase or decrease ......"

After saying the first four sentences, Xu San saw the two students beside him staring at him like good babies.

"Fuck, what are you doing with me? Remember! I'll probably forget about it after a while. Hurry up, hurry up...."Xu San hated the iron and couldn't make steel, and roared at these two indisputable things.

"Oh, good." The two students didn't talk nonsense, and quickly took out a pen and paper and began to record Xu San's words

After Xu San finished reciting a set of formulas and theorems and memorizing formulas slowly, the two students also stopped the pens in their hands, and it seemed that they had finished memorizing them.

The hand speed is good, so you don't have to do it twice.

Although it is not a problem-solving process, this set of mantras is something that a high school math teacher is staring at that must be taken down.

As the essence summarized by later generations of teachers, Xu San believes that it should have some effect on the education of this era, and hopes that these two students can tell their teachers this mantra so that it can be passed on.

As for the school where the two people are located, he doesn't care much about it, as long as he has a patriotic heart.

"Are you done?"

"I'm done!" The two students replied in unison.

"If you're done, get out of here, don't bother Sister Hua to accompany labor and management to drink, do you know how difficult it is for me to take a vacation? The rare time to make out with Sister Hua has been wasted by you two fools. Xu San said and waved his wrist to let the two of them hurry up, and then put his hand on Sister Hua's slender waist to show affection.

The two students wanted to say something, but saw that Xu San's other one had already taken out the gun.

So, they hurriedly put away the rolls and straw paper, and fled from Sister Hua's yard with their schoolbags on their backs.

Before leaving, he didn't forget to glance at Xu San, and said in his heart, how can this person change his face, he was still a teacher when he recited the mantra just now, and he was fierce and evil when he turned his mind.

Look at Sister Hua again, she is still so enchanting and moving.

Hey, what the old man said is true, women are tigers.

Looking at the two who left, Xu San exhaled faintly, "Hey, it's finally gone." Turning to look at Sister Hua, "I'm sorry to delay your business." ”

"I know that we will delay business, so why don't you hand over all your little yellow croakers quickly, which can be regarded as making up for our losses." Xiaohong, who was watching the excitement on the sidelines, immediately followed suit.

"I think you're also in arrears, so I should leave you some homework."

Xiaohong looked at Xu San teasingly: "Do you know how to send a report?" Do you know how to change plaintext to ciphertext, and understand ciphertext to plaintext? Hehe, if you don't understand, you don't know if I'm just talking nonsense. ”

"I don't understand, but your little boyfriend does."

"He's in Datong! I don't have time to care about me. Haha~" Xiaohong laughed presumptuously, and Sister Hua only shook her head, feeling that the child was too old to take care of.

"Do you know what the ratio of male to female students is?" Xu San suddenly asked.

"How much?" Xiaohong asked vigilantly.

"It's about 1:8, that is, out of nine people, one male comrade and eight female comrades. It can be said that the male comrades of the second section are like living in the daughter country. Xu San began to talk nonsense and be alarmist.

Listening to Xu San's words, Xiaohong was slightly moved, her brows tightened, and she seemed to see Lin Dong wearing headphones in the midst of Yingying Yanyan, forgetting her work, and then a female warrior wearing a military uniform and a heroic posture came over and handed over a telegram, Lin Dong resulted in a telegram, and then the female warrior took this opportunity to touch Lin Dong's little hand and took the opportunity to take advantage of him.

So, the more Xiaohong thought about it, the more crooked it became, and gradually, the thoughts in her little head began to be crooked, falling in an unhealthy direction.

Finally, she couldn't help but her eyes began to redden, and she said viciously to Xu San: "Ah~ You liar!" ”

"Why are you lying to you, the second subject is more special, so there are mostly meticulous women." Xu San continued to talk serious nonsense.

Xiaohong pursed her lips, and a tear fell down the corner of her eye.

Seeing Xiaohong like this, Xu San hurriedly said: "Okay, okay, I'm lying to you, it's not that exaggerated, but there are indeed more female comrades in the second department." Can you recall that there were more female comrades in the same period as you? ”

Xiaohong snorted, withdrew her tears, and pondered for a moment, Xu San was indeed right, but it was not as exaggerated as the 1:8 that Xu San said.

The relationship between Xiaohong and Lin Dong was seen by Xu San as early as when they met for the first time.

This time I say this because I love my subordinates and understand human nature.

After all, there are a lot of bloody episodes in later generations, so Xu San still reminded Xiaohong, "I'm making you have a sense of crisis, don't indulge yourself, you will be beaten if you fall behind!" When the time comes, the good man will be snatched away by other women, don't blame me, the leader, for not reminding you. ”

"How am I falling behind?" Xiaohong glanced down at her figure, and then touched her little face.

"I'm talking about professional knowledge and technology! Not the face and the figure. Xu San said with hatred.

"I'm a woman, not like these, compared to what?" Xiaohong already understood the meaning of Xu San's words, but now she still doesn't admit it.

"Comrade Xiaohong, shall we put our attitude right?"

"I'm very upright!" Little Red Sharp Mouth.

Because the difference between the identities of the two is too great, Xu San wants to say that they are not suitable, but he doesn't know how to say this, and in the end he can only hope that the long-distance relationship will change with time.

Ma Dan, the family is worried about the little girl's study; Here is to worry about Xiaohong's love problem, Xu San feels that he is miserable, and he says that the crossing is to enjoy happiness, but he feels that he is here to suffer from the crossing.

Looking at Xiaohong, Xu San said: "Although I don't know how to encrypt and decrypt, I am your leader, and I can assign you tasks!" ”

"Guaranteed to complete the mission!" When it comes to tasks, Xiaohong still puts away the attitude of a hippie smile.

That's right, this is the posture that a soldier of the Eighth Route Army should have. My task is simple, to familiarize yourself with your business of sending and receiving newspapers. Also, prepare a few more codebooks for backup. ”

Xiaohong blinked, it was very simple, but which one should be used for the codebook?

Xu San looked at Sister Hua and took out a few pages from her bag, "Sister Hua, this is Katakana and Hiragana in Japanese, and there are more than 100 common words, I have Zhuyin, but this Zhuyin may not be standard, this can't be helped, I can't write some pronunciation of Chinese characters, let's just do it first, after a period of time after my position is adjusted, the time will be a little richer, and at that time I will personally guide you." ”

"Okay, no problem! Guaranteed completion of the task. Sister Hua agreed, she was very happy, he didn't expect Xu San to plan to teach them Japanese in person.

"Leader, is there any important task for you to teach us Japanese?" Xiaohong asked.

"Not for the time being, it's always easier to know Japanese, and especially for you, it's better to learn as soon as possible if you want to return to your sweetheart as soon as possible."

"Ah, you don't want me anymore, leader?" Little Red Tears looked like she was about to cry.

"Yes, yes, don't come with me, I won't eat the third master!"

Sister Hua walked behind Xiaohong, leaned over and said in her ear: "Leader, this is all for your good, don't make a fuss, let's treat him badly in Qingfeng Building." ”

"When you're almost done, I'll apply to transfer you out of Ping'an City." Xu San continued.

"Where do you go if you leave peace?" Sister Hua asked.

"Rear, safe place."

"But when I'm gone, who's going to take my place?" Xiaohong was a little embarrassed, she and Sister Hua didn't want to go to the rear, because it didn't match their original intention.

"It's not difficult to send a report, I want to learn, and I can learn it quickly, so I can take your place. In fact..... I don't want you to show your face to have this idea. It's an ideal place for information, but it's ......"

This is Xu San's heart.

The cruelty and tyranny of the devil made Xu San have to think that if he encountered a crisis and died, he would be lucky, but if he was caught, Xu San couldn't think of the consequences.

And even if there are no devils, there will always be some crazy people in places like Fireworks Alley, and they don't care if you are clean or not.