How to break into a math book

When Tu Hua and Wang Boyu left the gymnasium, they met the two challengers who cleared the side mission in the teaching building. They were very smart, and immediately formed a team to pass the level after the side mission was over.Like the two of Tu Hua, they also just completed a main mission level, which is said to be located in the flower bed next to the gymnasium, and the name of the level is [Alice's Secret].

Among the two, the boy with darker skin is called Tang Bo, and the boy wearing a peaked cap is called Bai Jiaqi.Tang Bo friendly opened his system interface and communicated with Tuhua: "The main task we just cleared helped us unlock a main condition."

Tu Hua saw the same series of functional expressions as himself written in his primary election conditions: [y=x^2-3x+2]

"So although the content of the levels we have experienced is different, the final conditions are the same." Tu Hua has a general direction for the routine of this level-breaking game. The only problem at present is that he does not know how to distinguish between the main task and the side task. , "Have you found a way to distinguish between main missions and side missions?"

Bai Jiaqi asked: "Where did you encounter the main task?"

"The waste equipment room in the gymnasium." Wang Boyu replied.

"That means the mission you encountered is also very hidden?" Bai Jiaqi frowned.

Tu Hua vaguely heard something from his words, and quickly asked, "What about you? How did you get into [Alice's Secret]?"

Bai Jiaqi said: "When passing by the flower bed, I accidentally picked off a petal, and then the two of us were involved in the main task."

Tu Hua suddenly realized that if he guessed correctly, the difference between side missions and main missions lies in passiveness and initiative!

"There are side missions in the classroom, they are obvious to the challenger, as long as the challenger enters the corresponding area, they will pass the level passively; while the main mission has a certain degree of initiative, for example, we took the initiative to destroy the equipment room The lock, you took the initiative to pick off the flowers in the flower bed... It takes an active action to trigger the mission in a certain area! This is the main mission!"

Tang Bo was obviously more cautious. He didn't quite agree with Tu Hua's guess: "We are only looking for commonality in these two mainline tasks, and the persuasiveness is too low. Too few samples are not enough to generalize the rules."

"What Tang Bo said makes sense." Bai Jiaqi looked at his watch and suggested, "Why don't we go to other places to have a look, and come back here in two hours to exchange results, how about it?"

According to the original team formation method, Tang Bo and Bai Jiaqi went to the cafeteria, while Tu Hua and Wang Boyu went to the swimming pool behind the gymnasium.

There were almost no people in the swimming pool. Like the gymnasium, they didn't find any obvious mission levels.And this venue is not big, and there is no place suitable for hiding levels, except for the sparkling pool of water.

The water in the swimming pool is very clear, and it is divided into four tracks. The water depth on the left is 2 meters, and the water depth on the right is 1.5 meters. It is the same as the swimming pool in an ordinary swimming pool, and there is nothing unusual about it.

Wang Boyu squatted by the pool, reaching out to touch the water: "Could it be hidden in the water?"

The possibility is great.

Tu Hua took off his shirt and beckoned Wang Boyu to go into the water with him. The two swam up and down the track twice. Except for one or two challengers who occasionally passed by the swimming pool and looked at them with "crazy" eyes, everything was fine. It's normal.

Is there really nothing in this swimming pool?Tu Hua always felt that something was wrong, but he couldn't find a clue.

Having wasted more than an hour in the swimming pool, time was running out, so the two decided to change places and go to the library.Wang Boyu wiped the water off his head, climbed onto the shore first, and was about to turn his head to talk to Tu Hua, but found that Tu Hua, who had just been submerged in the water, had disappeared.

The swimming pool is crystal clear, but there is no noise.

……

In the darkness, Tu Hua woke up.

His whole body was submerged in the water, and the surroundings were pitch black, and he couldn't see anything.He remembered that he and Wang Boyu were in the swimming pool at that time, and the moment Wang Boyu landed, he seemed to be taken away by a violent suction force, and then passed out.

Then came to this place, in the water where you can't see your fingers.Is this a new level?Where is Wang Boyu?

"Ding--"

The buzzing sound came through the rippling water, and the system screen suddenly bounced in front of Tu Hua, glowing with a faint blue light.With this light, Tu Hua vaguely saw the surrounding situation.

His current environment should be the seabed.There are aquatic plants around, rows of tiny swimming fish, and some strangely shaped reefs.And he found that his body had also changed. Gills seemed to grow on the sides of his ears, webs like duck feet appeared between his fingers, and there were fine and dense fish scales on his arms.

He has the performance of a fish, can move freely in the water, and breathes with his gills.But Wang Boyu didn't seem to be seen around.In other words, it is very likely that he is the only one who has entered this mysterious level.So it's not that the swimming pool doesn't have mission levels, but that the number of challengers is limited, and missions will only be triggered when one person is in the swimming pool.

Tu Hua was such an unlucky person who got involved.

After figuring out the general background, Tu Hua looked at the system screen in front of him:

[Current level: primary level]

[Main quest: None]

[Sub-quest: Witch's Gift]

[Props: Mr. X's favorability +5, 1 ice rose]

Not the main quest.Tu Hua put away the system screen and began to check the surrounding conditions.

Just behind a reef not far away, there was a faint purple halo.Tu Hua swam along the light, and after his body and fish were homogeneous, he swam very fast, reaching a distance of nearly 500 meters with only two swings of his legs.

The one emitting light is a woman with a human octopus tail, which should be the witch mentioned in the mission title.Her skin is very fair, and her golden hair flutters with the water waves. She is not as scary as the witch in fairy tales, but she is more like a mermaid except for her dense octopus tail.

Seeing Tu Hua, she suddenly swam over with a smile, the gentle expression on her face contrasted sharply with the wriggling tentacles on her body/bottom, which looked a little weird.

"Tu Hua, you are here to save me, right?" The witch looked at him excitedly, folded her fists and put them on her chest expectantly, "I miss my people and my hometown, you must have heard my call , came to save me, right?"

Tu Hua was confused by the plot: "Save you? Aren't you a witch?"

The witch sobbed, and said aggrievedly: "I was originally the princess of the mermaid clan, but I was captured here and sealed up by the hateful witch. She asked me to replace her as a vicious witch, and also took away my beautiful fish tail, and turned me into a princess." Disgusting tentacles came out. She put a curse on me, and I will only be released when the 23 Patronuses are divided into two teams, and the number of Angel Patronuses in the two teams is the same."

With a wave of her hands, suddenly there were 23 cards lying flat in front of Tu Hua. There seemed to be some patterns printed on the cards, but Tu Hua couldn't see them clearly.

"These cards are patron saints?" Tu Hua asked.

"Yes, they are the patron saints. The front of the patron saint is an angel, and the back is a devil. Among the 23 cards in front of you, 10 of them have the front angel and the patron saint upward." The witch explained, "Although You can't see what's on the cards, but you have to accurately divide the 23 cards into two teams, and make sure each team has an equal number of angels."

"Ding--"

The system sounded, and the mission rules were officially announced:

[Sub-quest: Witch's Gift]

[Rules: 23 cards, one side is an angel and the other side is a devil, 10 of which are angels face up, the challenger is required to divide the 23 cards into two piles, and ensure that the number of angels in each pile is the same.Restrictions: The challenger cannot see the contents of the card, and only has one chance to challenge. 】

Tu Hua finally understood the meaning of this level, did the Dare Emotional System let him spy blindly? 23 cards, 10 angels facing up, divided into two piles when the cards are not visible at all, and the number of angels in each pile is equal?It's impossible, right?

Seeing Tu Hua's troubled look, the witch cried out, "You need to find a way quickly, in the world of witches, time passes quickly!"

Tu Hua was startled, and quickly called up the system interface, only to see that the countdown number in the upper left corner was beating crazily, with an average of every second, the last digit would drop by ten.

In other words, in this mission level, the flow of time is ten times faster than normal.This side task seems to have no round number and time limit, but it is more urgent than any other task.

The author has something to say: guess how to divide~~

In this side quest, Tuhua will get a very amazing ability~~ Sending flowers is in the next main quest~~