When Chen Zhou woke up, the sun was shining on his face, which was a bit dazzling.

He blocked it with his hand to make his eyes feel better.

Chen Zhou sat up and felt that his head was extremely heavy. He shook his head, trying to get rid of the dizziness in his head.

However, this attempt was of no use at all. Instead, it made me shake my head and feel dizzy.

Chen Zhou instinctively raised his hand to check what time it was, but found that his watch had been placed somewhere.

He reached for the bedside, found his phone, and clicked on the screen.

10:46 am.

"Huh? Did I only sleep for more than two hours?" Chen Zhou took another look and saw that the time was indeed 10:46, that's right.

While he was wondering, the door to the room opened.

Chen Xiao came in carrying a bowl. When he saw Chen Zhou sitting up, his eyes widened instantly. He was pointing at something randomly with one hand and almost dropped the bowl in the other hand.

"What are you doing?" Chen Zhou was a little confused.

Chen Xiao didn't say anything and ran out in a hurry.

After a while, the whole family rushed into the room.

Chen Jianguo looked at Chen Zhou who looked confused and asked eagerly: "Xiao Zhou, are you...are you okay?"

"It's okay, what's wrong?" As soon as the words came out, Chen Zhou realized something. He looked at the expressions on everyone's faces. Almost all of them were anxious and concerned.

He glanced at his cell phone, which was still on, and finally spotted the date: the seventh day of the first lunar month!

"Damn it! I slept all day and night and still got two more hours?!"

"No wonder my parents..." Chen Zhou felt very sorry and hesitated: "I'm sorry, Dad, Mom, I accidentally stayed up late... I overstayed my welcome... Don't worry. There are also grandparents,

I'm fine, don't worry..."

With tears in her eyes, Zhang Hongying looked at her son who looked guilty and muttered: "It's okay, it's okay, it's okay..."

If she could choose again, she said she wouldn't let Chen Zhou repeat the course even if it was 100 times. Who would have thought that reading can be addictive?

Chen Jianguo wanted to say something, but he didn't say it.

They discovered Chen Zhou sleeping on the bed at noon yesterday. At first, they thought the child had stayed up late reading and didn't get a good rest, so they didn't call him and wanted him to sleep more.

Later, at night, they found that Chen Zhou was still asleep in bed, and something was wrong.

But no matter how they shouted, Chen Zhou still slept deeply.

Chen Jianguo had never encountered such a situation before, and he did not dare to touch Chen Zhou, for fear that if something went wrong, it would be even worse.

He quickly called Chen Zhou's uncle and brother-in-law, and called them all over to help him think of a solution.

Chen Jianguo didn't want to alarm Chen Zhou's grandparents, but it turned out that his grandparents were at Uncle Chen Zhou's house and came over with him.

A large family gathered around Chen Zhou, thinking of everything they should think of.

I went to see a doctor. The doctor said that his vital signs were stable and there was nothing wrong with him. He didn't know if he had some incurable disease or was in a vegetative state...

I asked a friend about it, and he said that he had never seen anything like this before, so he must be possessed by evil spirits.

So I hired an exorcist, but it didn't work either.

There was no other way. The old Chen family dragged their friend to ask the doctor while taking care of Chen Zhou who was still sleeping.

As a result, before he could find out the reason, Chen Zhou woke up on his own.

Chen Zhou naturally understood what was going on, but it was hard to explain, so he made a fool of himself and said that he was studying day and night upside down. In fact, he had secretly eaten snacks and other things, but he didn't leave the house...

Of course, no matter how lame the reason is, it is better than no reason at all.

Chen Jianguo and the others didn't care what the reason was. The most important thing was to see that Chen Zhou was safe and sound.

After you and I expressed concern, seeing that Chen Zhou was fine, the whole family exited Chen Zhou's room again.

Zhang Hongying was busy making some food for her son. The three brothers Chen Jianguo called the doctor. Their friend said that Chen Zhou was well and that they had been troublesome for the past two days.

Looking at the backs of the family, old and young, Chen Zhou said silently in his heart: "I'm sorry, I really didn't mean to..."

Then, as soon as he lay down on the bed, Chen Zhou couldn't help but whisper: "It's so difficult, the medicine is too strong, and it takes too long! Cultivation of immortality is really not something humans do! I will never practice again in the future, unless I'm not at home.

..think about it again..."

When Chen Zhou thought about it, he didn't know if he was unconscious or if he heard the sound of the system before falling asleep.

He closed his eyes and his consciousness entered the system space.

I saw that the refreshed information on the display was still there.

"Congratulations to the host!"

"Complete the hidden mission, the simplicity behind the question."

"Task description: Current high school knowledge is the foundation of the foundation, and the so-called function problems actually have simpler methods. Please understand the host's knowledge of Lagrange's mean value theorem, Cauchy's mean value theorem and other related knowledge."

"Completion status: The host has understood the differential mean value theorem and has a preliminary understanding of differential calculus. Among them, it has mastered Rolle's mean value theorem, Lagrange's mean value theorem, Cauchy's mean value theorem, and L'Hôpital's rule.

Darbo theorem, Taylor's formula, etc.

The six major differential mean value theorems and their proof process. The corresponding college entrance examination applications of the three major differential mean value theorems, Lagrange's mean value theorem, Cauchy's mean theorem, and L'Hôpital's law have also been mastered, and the college entrance examination applications of the remaining three major theorems have been mastered.

, preliminary understanding.”

"Completion time: one month."

"Get the task reward: 1000 natural science experience points or upgrade the wrong question set (uniqueness)."

"Please host choose the mission reward yourself."

As soon as Chen Zhou finished reading, two "buttons" appeared, respectively on [Natural Science Experience Value 1000] and [Upgrade Wrong Question Set (Uniqueness)].

He was a little hesitant. Among the only information, he had already gained some experience points in natural subjects.

It's just that these natural science experience values ​​​​can't be used now. As for whether they will be of great use in the future, he doesn't know yet.

As for the wrong question set, I have already seen it, and it just feels like two words, it’s awesome!

And since it hasn’t been upgraded yet, if it were upgraded, it would be awesome.

Of course, this is the premise that the sand sculpture system is not buggy.

Also, based on Chen Zhou’s past experience in playing games, generally items with [uniqueness] at the end are of extremely high value, not to mention that they are unique items that can be upgraded.

Moreover, the rewards and upgrade opportunities obtained by triggering the hidden task for the first time in the wrong question set are also given by the hidden task, and the triggering conditions of the hidden task are not yet known, which means that if you miss this village, you will not be able to find this store.

After thinking about this, Chen Zhou decisively "pressed" the "button" on the "Upgrade Wrong Question Set (Uniqueness)".

Then, after waiting for a while, nothing happened.

After waiting for a while, there was still no change.

Chen Zhou exited the system space and took out the wrong question set from his backpack. The appearance did not change, and the recorded content did not change.

"No way? Have you been tricked by the system?!"

Chen Zhou put the wrong question set back into his backpack, closed his eyes again, and entered the system space with his consciousness.

Reach out and click on the "backpack" icon on the display screen, and click on the wrong question set lying inside.

A string of explanatory text appeared above: Wrong question set (uniqueness, upgrade completion: 0%), which automatically records all wrong questions in the host's current study.

"???What do you mean? You still have to upgrade from 0?" Chen Zhou felt that he had been cheated instantly. This was obtained in exchange for four and a half cans of psychoactive potions!
Chapter completed!