How to break into a math book

221 Baker Street is the residence of the great detective Sherlock Holmes in Conan Doyle's classic novel "The Detective Collection of Sherlock Holmes".After they entered the level of Sherlock Holmes, they did not get the task requirements prompted by the system, so the task method of [reasoning and proof level] may need to be triggered by the scene.

Tu Hua observed the surrounding situation. The scene was very realistic. All the people on the street were blond and blue-eyed British people. Even the weather was foggy, as if he had really come to Britain at the end of the 19th century.The only thing that makes the game stand out is that the game has been Sinicized, and the words on the plaques on the street are all marked in Chinese.

According to the current situation, the system directly sent them to Holmes' door. If they wanted to complete the tasks in the Holmes scene, they had to find Holmes first.

The three discussed it and rang the doorbell at 221 Baker Street.

After a while, a middle-aged woman with a fat figure opened the door for them, and asked strangely, "Who are you looking for?"

Shen Siyi said: "Let's find Mr. Holmes."

Hearing that they were looking for Holmes, the woman immediately smiled: "You can call me Hudson, I am Mr. Holmes's housekeeper. He is very busy recently and has been involved in a big case. He is not at home right now. You can go upstairs to the study and wait for him."

As he spoke, he led them into the house, pointed to the stairs on the second floor and said: "The study is on the second floor, you go up and sit down first, and I'll make you a cup of coffee."

The three thanked each other and looked at the layout of the room curiously.

No. 221 Baker Street was originally an ordinary house, which became famous because of Conan Doyle's novels, and was transformed into a tourist attraction.Tu Hua has only seen relevant information on the Internet, and has not visited the site.The scene in this game restores the original fictional scene, which is more exciting than visiting 221 Baker Street in England.

Through the wooden stairs, the second floor is Holmes' study.His study didn't look very big, about thirty to forty square meters, the flame in the fireplace seemed to have just been extinguished, and the charcoal was still glowing red.There are two single sofas and a wicker chair in front of the fireplace. By the window is Sherlock Holmes's desk, on which are various books and documents. A black bowler hat.

After a while, Mrs. Hudson came up with coffee, and after a few words of courtesy, she went downstairs without saying when Mr. Holmes would return.

Out of politeness, the three suppressed their curiosity and did not flip through Holmes's things. They sat obediently in front of the fireplace and waited for the return of the great detective.

But the refreshing coffee was of no use. After waiting for some time, Tu Hua felt a little sleepy, and he couldn't wait for Holmes to come back.Sun Wei stood up and said, "I'll go to Mrs. Hudson and ask about the situation."

But after going downstairs for a while, I heard Sun Wei shouting as he went upstairs: "Mrs. Hudson...is gone!"

"What?" Tu Hua went up to meet him, "Could it be that something went out?"

Sun Weining raised an eyebrow: "It's unlikely. I went to the kitchen and saw that something was still cooking in the pot, but the person was gone, and the pot had been burned dry. It was as if... disappeared out of thin air."

The sky outside the window had already darkened, and the three of them guarded the empty house at a loss.Shen Siyi casually turned on the light next to the fireplace: "What should we do, should we continue to wait?"

At the moment when the wall lamp was turned on, a bright light suddenly flashed around, which made people unable to open their eyes.After the light passed, they realized that the surrounding scene had changed.

They seemed to trigger a new plot, moving from Sherlock Holmes' study to a gloomy and dark place.There are cemeteries around here, and it is extremely cold. At the end of the dark night, there seems to be a spot of light.

"What's going on here?" Sun Wei looked around suspiciously.

Tu Hua looked at the spot of light in front of him, and frowned: "I think the system should be asking us to trigger a new level plot while waiting for Mr. Holmes. Only when we complete the new task can we see him."

"As for why we waited so long..." Tu Hua looked at Shen Siyi, "It's probably because we were too obedient and didn't touch anything in Sherlock Holmes' study room. It wasn't until Shen Siyi pressed the switch of the wall lamp that a new plot was triggered. .”

Shen Siyi nodded in agreement, pointed to the extremely dazzling spot of light in front of him and said, "Next, we must take the initiative to take a look at the bright spot first."

The spot of light seemed to be far away from them, but they arrived after walking for about 3 minutes.It turned out that the place where the light was on was a passage. Standing at the exit, one could see what was on the other side of the passage, which was Holmes' study.Between the study room and this dark and terrifying cemetery, there is a transparent crystal-shaped bridge, as long as they walk through it, they can return to the original place.

Tu Hua was about to go out, but was suddenly pulled back by Shen Siyi: "Don't worry."

Shen Si Yi Ning pointed her eyebrows at the middle of the bridge, only to see a fierce and fierce man standing there with a spear in his hand, leaning on the pillar in the middle of the bridge with his eyes closed to rest.

"This bridge may not be so easy to pass." As soon as Shen Siyi finished speaking, the system's long-lost beep sounded.

【Ding--】

[Golden 10-minute game rules: The crystal bridge is a bridge connecting hell and the world. It takes 10 minutes to pass through this crystal bridge. When they enter the human world, they will be arrested; if they accidentally walk out of the human world, they will also be repatriated. 】

So... it's a game of crossing a bridge in 10 minutes and not being detected?The bridge doesn't look very long. Tu Hua checked it visually. If you run, you can pass it in two to three minutes at most.But there must be his reasons for the 3-minute time limit set by the system. Tu Hua went out to try it out, and found that the crystal bridge seemed to have some kind of gravity, which made him unable to control his own movement speed on the bridge.

It's like being dragged by the legs, and can only move forward slowly and at a constant speed.Presumably this speed is specially set by the system for this game, requiring the challenger not to control the bridge crossing time by their own strength, but to advance at a speed of 10 minutes to cross the bridge.

But there is another bridge guard in the middle of the bridge. According to the rules, the bridge guard will patrol every 6 minutes. Once someone is found on the bridge, he will deal with it immediately.Human beings who accidentally come out of the world will be sent back, and those who try to escape from hell will be arrested.

The study of Sherlock Holmes in front must be the human world mentioned by the system, and behind them... it should be hell.So from the very beginning, the system positioned them as escapees from hell?

Sun Wei leaned against the exit and looked ahead: "We can only walk to the middle and back of the bridge in 6 minutes at most, and we will definitely be discovered by the bridge guards."

Tu Hua also nodded: "Yes, I just tried it. We have no way to control the speed of walking on the bridge. That is to say, it is impossible to leave the bridge within 6 minutes."

He stood on the edge of the entrance, holding on to the railing of the crystal bridge and looking down.There is an endless abyss underneath. At first, he thought about crawling over the edge or turning over under the bridge, trying to find a blind spot that the bridge guards could not see, but the situation under the bridge made him stop this unrealistic idea.

Shen Siyi rubbed his chin and frowned, "Is there no way to pass?"

The three of them were thinking about countermeasures when they saw the bridge guard, who had been resting with his eyes closed, suddenly opened his eyes, held a spear in one hand, and looked around on the bridge, probably checking to see if there were any humans coming out.

Tu Hua hurriedly retreated from the bridge and hid in hell. Fortunately, he was standing at the edge of the entrance. The bridge guard didn't notice the situation here. After patrolling back and forth for a while, he returned to the spot and closed his eyes.

The bridge guard was wearing armor, and his attire was very strange.Shen Siyi stared at him for a while, then wondered: "Do we look any different from the people who came from the world?"

Tu Hua looked down at his clothes. It was still the school uniform he wore when he first entered "Mathematics Breakthrough". The clothes on Shen Siyi and Sun Wei were also the same. Whether it was their clothes or their appearance, they looked like ordinary human beings. look.

But judging from the current distribution situation, they do belong to the camp of hell.Tu Hua couldn't think of any difference between them and the people who came out of the world.

"Since we look no different from those who came from the world, how can the bridge guard tell the difference?" Shen Siyi folded his arms and looked at the bridge guard strangely, "How could he judge that we came from hell? people?"

Tu Hua frowned: "Could it be that this bridge guard has a special ability endowed by the system, able to tell the difference between us?"

Shen Siyi shook his head and said, "I don't think it's possible."

"Actually, we don't belong to hell." Shen Siyi turned to look at the cemetery behind him, "Hell is very gloomy, there is no one else except the three of us, and we also came here by accident because we triggered a checkpoint. Logically speaking, there should be ghosts and ghosts in hell, not humans like us."

"But this game keeps emphasizing to us that if the bridge guard finds us running out of hell, he will catch him. Unless the bridge guard NPC is targeting our challenger, he can't Judge whether we came from hell or the world."

Tu Hua frowned: "But since the rules say that he will catch it, it proves that he has his own set of judgments. He can find out that we sneaked through hell..."

"It's the direction!" Sun Wei suddenly looked at the entrance of the human world, and suddenly realized, "There is only a bridge between the entrance of the human world and the entrance of hell. If people in hell want to return to the human world, they must face the human world. If you accidentally walk out, you will be facing the direction of hell."

"So the bridge guard must have judged by the direction. If we face the entrance of the world, he will think that we sneaked out of hell, and then arrest us."

Tu Hua also came back to his senses: "So... as long as we face the entrance of the world, he will think that we are human beings who stumbled out of the world?!"