When Su Yuan came to Xu San's house, it was not yet dark, but Xu San still lit the kerosene lamp and erected a small blackboard for the little girl to study.

Next to the blackboard is Xu San, and in front of him is the little girl sitting on Xiao Mazha, Su Yuan, and the auditor Xiaohong.

Pick up the chalk and put "X+11=50" on the board

After seeing Xu San write, the little girl raised her hand and asked, "What is the word for that fork." ”

"This pronounces 'Ex'!" Xiaohong answered the question quickly, and Xu San answered the little girl's question.

But the little girl didn't believe it!

Turning his eyes to Xu San, "Is Aunt Xiaohong right?" ”

"She's right, it's. English! ”

"What is English?"

"English is what foreigners say, how they write, and the mathematics they teach today, you just need to know the letter. In mathematics he is just a symbol, representing the unknown. ”

"Unknown? I just don't know, do I? The little girl asked.

"Yes!" Xu San said, and began to talk about the one-dimensional equation.

In about twenty minutes, the class was over, and the little girl also successfully learned the basics of the one-dimensional equation.

Watching the little girl bite the pencil and do the exercises, Xu San was full of a sense of achievement.

Which teacher doesn't like such a student, but it's a pity that this word is not good-looking.

Look at Xiaohong and Su Yuan again, Xiaohong is okay, she is similar to the little girl, she can accept new knowledge smoothly, and can draw inferences from the little girl.

But Su Yuan didn't seem to understand.

This Xu San understands, because Su Yuan did not learn mathematics from scratch, even Arabic numerals were learned by his little sister who followed her after his apprenticeship.

Xu San walked over, specially opened a small stove for her, and patiently explained it.

looked at the time, it was just eight o'clock, and I had the heart to talk about it in depth, but I still had to think about it, after all, Su Yuan understood slowly, and it was okay to wait for her.

Xu San began to assign homework.

After assigning their homework, the three good students went back to their houses to complete their homework, while Xu San wrote lesson plans while recalling the learning progress of primary school.

Writing, writing, the pen stopped, because he remembered that he hadn't talked about the fraction yet, so he jumped directly to the equation.

Hey, I really don't care about being a teacher.

Turning the page, I quickly wrote out the lesson plan for the scores, and planned to talk about the scores tomorrow.

After the family affairs are dealt with, it is time for the five battalions, and the training plan still needs to be done.

But Xu San was really too lazy to get it, so he decided to take a trick.

Take out the training plan of the Yamamoto special combat team, reduce the difficulty, and halve the training volume, isn't it OK.

Still, he didn't bother to put pen to paper.

So, he found Xiaohong with the training plan of the Yamamoto special combat team, "Copy this training plan." ”

Xiaohong picked it up and looked at it, there were more than a dozen pages, and there were pictures, this was about to be copied, and it was estimated that it would take at least two hours, so she complained, "So much?" ”

"You don't have to copy it all." Xu San said as he flipped through the document and pointed to the place he had modified with a pencil.

Xiaohong frowned, and after listening to Xu San's explanation, she said, "Even so, there must be eight or nine pages." ”

"Who makes my family Xiaohong, the words are good and the paintings are good! Who is not looking for you, who is looking for you? Xu San smiled and complimented.

Xiaohong couldn't help but praise, and immediately became proud, "Even if you have eyes, you really can't handle your bad words!" ”

Xiaohong took out a pen and paper, lay down on the table and began to copy.

Looking at Xiaohong, who started working, Xu San said, "Don't bother you, I'll go out first." ”

"If you're not busy with business, brother-in-law, stay with me in the house for a while, otherwise I won't copy this document." Xiaohong said.

"Good!" Xu San agreed, turned around and sat on the chair next to him.

On the table, Xiao Hong's pen was flying, copying quickly, and by the light of the kerosene lamp, a shallow smile appeared on her face.

The moonlight is hazy, and the insects and birds are singing.

Far away from the outskirts of the steel plant, a pillar of light rose and fell, floating, and a patrolling three-wheeled motorcycle cut through the night and staggered from a distance.

The road is not good, the motorcycle is bumpy, and the devil sitting in the bucket grabbed the handrail, for fear of flying himself out if he encounters a big hurdle.

As the motorbike drove by, the area went dark again.

After a while, a few "wow" dog barks came from the darkness.

The barking is short and regular, and when heard, it is the work of a trained dog.

Immediately, a searchlight came from a distance.

Under the bright light, a black back appeared.

At this moment, it was holding a human arm bone in its mouth, and there was still a little bit of flesh stuck to the bone that had not rotted.

Fierce dogs.

Human bones.

In the dark of the night, it makes for a creepy picture.

A low whistle came from the depths of the darkness.

The whistle is ethereal and long, like the murmur of a female ghost, which makes people shudder.

After pricking up its ears to identify the location, the military dog quickly ran towards the source of the sound with a bone in its mouth.

The searchlight moves as the dog moves, illuminating its way forward.

Soon, the dog found the source of the sound.

Put down the bones in your mouth, sit down, and wait for new orders.

By the light of the searchlight, two patrolling devil soldiers appeared.

One of the devil soldiers picked up the arm bone on the ground, and after only one glance, he showed a disgusted expression, and then said to the dog, "Yaga, Vortex Pill, why did you bring this kind of thing back again." ”

"Wow!"

The devil soldier shook his head and didn't blame him any more, although it was only an arm bone, but this was a dog's training subject, if it was terminated at will, then it was likely that there would be unnecessary omissions in future patrols.

Dogs are military dogs, although they are preferred, but they can only execute simple commands, and there will still be more or less deviations in the implementation of overly complex commands.

"Alas~" The devil soldier sighed helplessly, and could only put this human arm bone into the bag he carried.

There is no way, this thing can't be thrown away casually, otherwise it may be picked up by other dogs next time.

"Datian-kun, how many pieces is this?" The other ghost soldier asked.

"I didn't count it, count how bad this thing is!" After Ota finished speaking, he gave the order to Vortex Maru to continue patrolling.

The arm bone that the dog brought back was from a former steel mill worker.

The workers of these steel mills, like other workers of this era, were oppressed and did endless work.

If you slack off a little, you will be punched and kicked, and if you are almost physically killed, you will probably be beaten to death, and then the corpse will be discarded at will, and if you are lucky, you will be buried in a pit, and if you are unlucky, you will go directly to the wilderness. And these randomly discarded corpses are now beginning to decompose, which also brings some trouble to the devil patrol.

Daejeon gestured safely towards the searchlight.

The searchlights were turned off, the flashlight came on, and Daejeon let out a sigh and continued his patrol.

It wasn't long before the area was plunged into darkness again.