How to break into a math book

【Ding--】

【Welcome to the mainline level: What exactly is the function? 】

[Rules: Challengers can form a team to enter the main level (up to 4 people in the team), and look for functions belonging to this level.One person can pass the customs clearance, the whole team can pass the customs clearance, the time is not limited. 】

This place is barren, full of jagged rocks, dusty and windy.To be precise, this place is not like the Gobi Desert, there are no rivers, no plants, only bare permafrost.This extremely cold feeling is a bit like the depths of the plateau.

Wang Boyu looked around in bewilderment, his teeth chattering from the cold: "Where the hell is this?"

After they chose to break through the level, they were teleported to this place.The system didn't give any prompt, and there is only one information known so far: it is to find the correct function here.

How to find it, where to find it, and which function to find it, they don't know at all.In this place where you can't see the edge at a glance, there is no direction at all.

Sun Wei crossed his arms, frowned and said, "There are no specific requirements for this task, it only says that we need to find the correct function. The first thing we should confirm is what form this function will appear in."

Wang Boyu was suddenly excited: "Could it be that kind of treasure hunt game? The function we are looking for is actually some kind of treasure, hidden underground waiting to be excavated..."

Tang Bo pursed his lips: "I think it is possible that we encountered a certain event here, and then judged what function it is based on the specific event."

Tu Hua was so cold that his skin got goosebumps, he moved in place and said: "It's too cold here, we need to find a warm place first, or find clothes to put on."

They were still wearing the school uniforms they had when they first entered the checkpoint. Boys’ styles were okay, with long-sleeved shirts and trousers. Although they didn’t keep warm, they at least kept the wind out.Girls' short skirts are obviously not suitable for this kind of outdoor activities. Sun Wei shivered with bare legs and sneezed twice in succession.

Tu Hua was thinking about whether to help her find a dress, when he saw Wang Boyu took off his shirt and handed it to Sun Wei: "You block your legs first."

Sun Wei was stunned, and after a while he said embarrassingly: "No need, you are also cold..."

Wang Boyu still has a close-fitting vest left. Although he is strong and his arms are full of tendons, he still has goose bumps when the cold wind blows.Tu Hua didn't expect Wang Boyu to be such a gentleman, and stubbornly stuffed the clothes into Sun Wei's arms: "It's okay, I resist the cold. You girls... are afraid of the cold."

The two were in a stalemate for a while, and Sun Wei blushed and took the dress and wrapped it around his waist.Wang Boyu was so cold that he jumped up and down, and walked around Tu Hua like a monkey: "What should we do? Which direction should we go? We need to get out of this place quickly?"

Tang Bo took out a compass from the system backpack: "This is the reward I got from the previous mission."

Tu Hua took the compass and looked at it. According to the compass, the north was right in front of them.Sun Wei also started running in place because of the cold, and Tu Hua asked her, "By the way, do you have any hints on that calculator?"

Wang Boyu and Tang Bo didn't know that Sun Wei still had this kind of artifact, so they went to see it curiously.This time the calculator did not make a sound, but directly displayed a prompt message on the screen: [After passing through the desert and the polar regions, the function is in the rainforest.Hot to the north, humid to the east. 】

This paragraph seems to give a lot of information, but it is difficult for them to connect this information with the task without knowing anything.Tu Hua was too cold to turn his head. Seeing the words "hot to the north" was like grasping at straws: "Go north first! The north is warm!"

The four of them ran northward all the way.After running for about 20 minutes, my body was sweating, and I saw that there seemed to be a river in front of me.There was misty white mist across the river bank, and it was hard to see what was there.Until they reached the shore, they still couldn't see clearly what was on the other side.

The river is more than ten meters wide, and the current is not rushing. Tu Hua was the first to drip into the water: "These fog should be some kind of barrier or enchantment. We should be able to get to a warm place by passing through it."

The river water is not bone-piercing. Compared with the cold temperature here, it seems to have a little temperature.Climbing up to the other side of the river, Tu Hua instructed: "I'm not sure what's on the other side. It's very foggy here. Let's get closer and don't get separated."

After walking about ten meters, the thick fog dissipated.Tu Hua looked at the scene in front of him in astonishment, and finally understood the meaning of the words "hot to the north", because at this moment in front of them was an endless golden desert.

As soon as they left the ice cellar, they immediately entered the stove. The sudden change in temperature made all four of them turn pale.Wang Boyu lay directly in the sand: "What the hell is this place? There is no one person. Where is the function? Do you want us to travel all over the great rivers and mountains of the motherland to experience different environments and landforms?"

"Hush!" Tang Bo suddenly covered Wang Boyu's mouth, "Someone is here!"

Tu Hua looked in the direction of his finger, and saw four people walking not far away.They were covered with scarves, and their faces were tightly wrapped. At first glance, they looked like people who often walked in the desert.

Wang Boyu got up, nestled under the sandy slope with them, and asked in a low voice, "What should we do? Who are those? NPCs or challengers? Shall we go and have a look?"

Tu Hua felt unsafe.Judging by their attire, they should be the NPCs of this level, but each of them has weapons on their bodies. The three behind them look like long knives on their backs, and the first one has a black rifle/gun behind them.Although they have never encountered an NPC that actively attacks the challenger since entering the game, they cannot take it lightly.

After all, in the game, both Rush and martial arts are possible.

But these few people are the only NPCs they have seen since entering the level. They must have clearing information on them. If they just miss it, they don't know how long they will continue to wander in this desert.

Tu Hua thought for a while, and took out the ghost stone from the system backpack. Although it seemed useless, it was the only thing he could use as a weapon at the moment.

"Wang Boyu, let's go ahead and have a look." Tu Hua turned to Sun Wei and Tang Bo and said, "You two wait here and hide."

After speaking, the two walked down the sandy slope and walked in the direction of the four people.Tu Hua observed the route of these four people, and found that they came from the west and were heading east.As soon as the two of them walked down the hillside, the four people found them, took out their weapons from behind, and looked like they were ready for battle.

Wang Boyu raised his hands and moved forward: "Excuse me! Excuse me! How can I get out of this desert? We are not bad people!"

The four people on the opposite side took off their headscarves, revealing dark skin and colorful oil paints on their faces. Their ethnicity was a bit like that of African indigenous tribes.The leader suddenly grinned, his white teeth and skin formed a sharp contrast: "But we are bad guys."

They spoke Chinese, and when Wang Boyu heard it, he backed away in fright.The black man immediately raised his gun, his eyes darkened: "Hand over all the treasures on your body!"

Tu Hua was also restrained by the two people behind. They had nothing of value on them. Tu Hua was directly stripped of his clothes by the two black men. Seeing that there was nothing on him, the black men were about to strip his pants.

The two black men were tall and strong, holding Tu Hua down with one hand.But a soldier can't be killed, it's too inhumane to strip his pants like this!In order to preserve his last dignity, Tu Hua picked up the ghost stone and threw it on the black man's head: "I'll fight with you—"

"Stop!" The black leader saw the Mingshi in Tu Hua's hand, his eyes widened, "That's Mingshi! He is the one who wants to marry the chief's daughter!"

The author has something to say: This level is not brain-burning, but it is fantastic!Guess how Mr. X will appear~