Dozens of people are looking forward to it.

Lu Xi immediately retreated and started his own journey of brushing questions.

The collection part of the first chapter is quite simple, 5 pages of content, and it is very simple.

Although they are all previous college entrance examination questions across the country, the green light is lit all the way, and there are basically no questions that can make her entangled.

Chapter 2, Functions, is a bit more complex than the collection section.

But it's just a little complicated, and there is nothing difficult for her.

This relaxed and happy state of brushing questions made her think that she could brush off this set of nearly 300 pages of "5-year college entrance examination and 3-year simulation" in four or five days.

So Lu Xi went all out and brushed to the third chapter, derivatives and their applications.

There weren't many exercises in this chapter, and when she flipped through them, there were only a few pages.

However, when Lu Xi was about to start this chapter, hey, why did he look so unfamiliar?

She couldn't help but rub her eyes, thinking that she had seen it wrong. She flipped the first question over and over again.

The relevant memories in my brain are blank, and I don't know where to start to answer?

Just like a clever woman is difficult to cook without rice, no matter how high her cooking skills are, she is proficient in the practice of at least one hundred and eight dishes for the Manchu and Han banquets, but not a grain of rice, a single drop of Chinese cabbage will be given to you, and you will not be in a rut.

Lu Xi was like this at this time, and in an instant, the knowledge of the 5 compulsory textbooks that he had finished reading flowed through his mind.

Then she realized that she might have missed a point, missed a knowledge point and did not grasp it. Immediately checked the syllabus of science and mathematics in the Southeast Provincial College Entrance Examination on the Internet, and sure enough, I found that this "derivative and its application" is part of the scope of the investigation.

With a shallow impression of "Derivatives and Their Applications", she walked to the pile of 21 elective textbooks, from which she turned out the elective textbooks 2-2 - Derivatives and Their Applications, Reasoning and Proof, the Expansion of Number Systems and the Introduction of Complex Numbers.

Alas, the college entrance examination not only tests the compulsory content, but also a lot of optional content.

Lu Xi, who woke up to himself, went to look at the exercise list of other chapters of 5.3, and sure enough, he found that some of the content that was not in the compulsory textbooks, but the more in-depth content in the elective textbooks, if not absent, only appeared in the elective textbooks.

This meant that she had to pause for 5.3 and go through the list of books listed in the syllabus first.

Thinking of this, she searched for the three books of Elective 2-1, Elective 2-2, and Elective 2-3, and the four books of Elective 4-1, Elective 4-2, Elective 4-3, and Elective 4-5 according to the syllabus, a total of 7 volumes.

The elective textbooks are all thin booklets, which are no more than 150 or 60 pages of compulsory textbooks, and it doesn't take much time to read them.

Sincere! Sincere! Sincere!

Just when Lu Xi was about to take advantage of the victory to pursue and start reading these 7 elective textbooks, there was a knock on the door.

"Isn't it sleeping?"

Before Lu Xi could open the door, his mother's voice sounded.

"Well, no, I'm reading."

Then she opened the door and saw her mother with a glass of milk.

I thought it was my mother who got up at night and saw the light on the third floor, guessing that she hadn't slept yet, so she poured milk up.

Deng Yufang put the milk on the desk, glanced at the elective textbooks, and said, "It's late, I drink milk and go to sleep, you know?" ”

Lu Xi nodded and said, "I'll finish reading one more point, and I'll sleep right away after reading it." ”

There are a few thin elective textbooks, but there are not many contents, and Lu Xi estimates that it won't take many hours to read them all.

"Look at what time it is, drink the milk, and then go to bed immediately, and read the book tomorrow when you get up."

Deng Yufang said, pointing to the decades-old mechanical wall clock on the wall, half past twelve at midnight.

Click, as soon as Deng Yufang's voice fell, the old-fashioned wall clock clockwork that would tell the time at half past one hour rolled up, and then the bell rang very brightly.

The law of the wall clock is that the hour rings according to the number of points, 12 o'clock is like 12 times, 6 o'clock rings 6 times, and half o'clock tells the time, it rings once in unison.

"It's so late." Lu Xi, who had been brushing the questions and didn't pay attention to the time, touched his head and smirked.

"I know it's late, rinse your mouth and go to bed, I'll take the cup down and wash it."

Deng Yufang supervised Lu Xi to finish drinking the milk, watched her leave the study and enter the bathroom, and then went downstairs with a cup with satisfaction.

Lu Xi lay on the bed refreshed, at this time in the dead of night, the sound of insects chirping one after another came from the window, which added a bit of silence and tranquility to the night.

"Sleep well and get up tomorrow morning to read."

With such a thought, Lu Xi closed his eyes.

Time passed in a flash, and Lu Xi felt that as soon as he closed his eyes and opened them again, the sky was bright.

Lu Xi, who just opened her eyes and felt that the sky was bright, found that something was not so right, because she did not wake up lying on the bed, but was sitting on the chair in front of the desk, her head was lying on the table, and even her left hand was still holding a ballpoint pen.

This appearance is clearly a picture of fighting all night and finally falling asleep.

She raised her head, and what was pressed under her head before was the open exercise book "5 Years College Entrance Examination 3 Years Simulation".

"Could it be that I thought about it day and night, and then I got up in the middle of my sleep last night to read the book overnight, and then did a part of the exercises, but why didn't I have any impression at all?" Lu Xi said to himself in a little surprise.

She moved, her hands and feet a little numb, apparently sitting in this position for a long time.

However, this numbness of blood incirculation was not taken to her heart, she opened the "5-year college entrance examination 3-year simulation", and was completely attracted by the contents inside.

The third chapter of the workbook, "Derivatives and Their Applications", and the following two subsections, "Derivatives and Integrals" and "Applications of Derivatives", have been completed for a total of 5 pages.

Looking at the handwriting, it's her own, not a prank of a villain haunting in the middle of the night like "Borrowed Girl".

Lu Xi's eyes were like a sword, stabbing at every question he had done, and his brain automatically appeared, which was related to derivatives. Then the question that should have been very unfamiliar was understood, and the answer automatically jumped out after reading the question, exactly the same as the answer written there.

But Lu Xi clearly remembered that before going to bed last night, the knowledge about "derivatives" in his mind was still blank.

All kinds of signs hinted at those two words that surprised Lu Xi - sleepwalking!

Only sleepwalking can explain why he has no impression of what he did after he fell asleep last night, but what makes Lu Xi feel strange is that the impression of sleepwalking is gone, but the memory of the book he read while sleepwalking is completely preserved in his mind.

"Although it seems to be sleepwalking, it doesn't seem to hurt, but it has a lot of benefits." Lu Xi muttered to himself.

She didn't know how many books she had read or how many exercises she had been doing while sleepwalking, but judging by the thickness of the books she had read and the amount of exercises she had done, it was no less than 5 hours.

I slept at 12:40 last night, and now it's 7:06.

In other words, she may have only slept for more than an hour all night last night, which is about the same as an all-nighter. Well, she should be very sleepy and tired by now.

However, she did not have this feeling of extreme exhaustion and emptiness in her mental body because of Yan Zhan Ng's staying up late. The state of the whole person is no different from sleeping until you wake up naturally, that is, if you sit for too long, your hands and feet are not very flexible, and when you stand up and move, you make a crackling sound like fried beans.

"It is rumored that albatrosses can fly and sleep at the same time, and dolphins can sleep while swimming, which is amazing. So can I sleep while reading and doing questions, and the efficiency is still very high, without delay? ”

Life is short, there is no end to learning and long, not to mention that even if life is just a few decades, the real achievements are only twenty or thirty years of peak, if you can sleep while working, you can undoubtedly make more achievements.

In his previous life, Lu Xi, who occasionally thought about how much more people could do if they didn't have to sleep, felt that if he had this kind of talent, it would be really good.

Of course, this was a one-night anomaly, and she didn't know if it was a flash in the pan, or a normal talent or illness.

But no matter which one it is, she wants not to sue her family for the time being.

Because in the eyes of ordinary people, the kind of behavior she did last night is sleepwalking, and sleepwalking is a disease that can be cured.

Instead of worrying your family by saying it, it's better to wait and see what happens in the future. A girl who is only 14 years old and has a lot of imagination is not impossible to sleepwalk, and it may disappear automatically after a while.