"Some dungeons will be divided into several small dungeons. As long as one dunge is completed, the system will randomly allocate the player or be assigned to the second small dungeon. After all the dungeons are completed, the final winner will be evaluated using the points system." - "Dark World" official TIP

I glanced at all the items and clues taken out on the table. I had finished reading the other things by myself. Now I want to combine the small bottle of potion with these four keys, and then insert the key into the corresponding key hole.

Feng Heng looked at the indiscriminate keys arranged on the right hand side. As the name suggests, the serrations, shapes, and various characteristics of these keys are completely consistent, so it can be inferred that these four keys must be the key clues to open the safe.

As for what should be done next to identify the keyholes corresponding to the four keys?

Feng Heng put his eyes on the small bottle, which was the size of a thumb. Put the key in, so the key could be completely infiltrated.

Now he can put all these keys in one by one, but there is one thing that Feng Heng is worth considering.

Who knows how many keys this bottle of potion can withstand the pollution?

The note is also clearly written-

"While the old woman was not in the office, I found the potion she used to identify the keys on the desk."

"This old woman is really rich. She bought four or five boxes, and each box is about forty-eight bottles, all of which are the same as the size of a thumb."

This is the original words on the note.

At first, Feng Heng was a little surprised, why did this math teacher, known as the "old woman", buy so many bottles?

Could it be that she really has serious amnesia?

But considering the old woman's profession - the math teacher -, Feng Heng dispelled this idea in his mind because he found a reason to refute this idea.

As we all know, if you want to solve math problems, you must have a good memory.

Why do you say so?

If you are very forgetful and forget the previous problem-solving steps after you finish writing, then it is impossible for your question to be solved in a short time, and it will definitely take a long time.

In addition, as mentioned in Aitong's diary before, this old woman is a teacher who has won many awards, so there must be calculations in mathematics.

In this way, the old woman who said that Ai Tong had a poor memory was completely wrong.

But why did she buy so many potions?

Extended, two opposing conclusions can be drawn--

First, this potion is very cheap, so she wants to buy more to stock up.

Second, the effective effect of this bottle of potion is limited, for example, the effective effect of a bottle of potion is only one key or two keys.

Now we need to find the most correct one from these two conclusions, which is reasoning, simple reasoning.

Logically find errors from them, and then overturn them in one fell swoop, a simple reasoning operation.

The first conclusion is that the potion is very cheap.

According to the potion effect I just saw on the note—

"The key also has color, but it needs to be treated with special potions."

Let me first talk about why these potions were prepared by people.

Of course it is for those who have a particularly poor memory and forgetfulness.

Forgotten people will not remember what the key holes correspond to these keys. They must use this special potion to show the color on the key. If you guess correctly, the potion will last very short.

That's why more potion bottles are needed to prevent failure.

In one reasoning, we found the correct one from two different opposite conclusions.

Feng Heng smiled slightly, got and merged these conclusions together, and finally got a clue, an important clue—

This potion has a short effect time, and each bottle of potion can only cause effective effects on a few keys.

So if you want to open this safe, you must move quickly.

Next is the question about this keyhole, and the words about this thing are also written on the paper—

"Although the four key holes in the safe are completely consistent, after special lights, you can see the colors on the key hole."

After you have obtained the method of showing the key color, it is the method of showing the keyhole color.

Feng Heng glanced at the location of the safe and suddenly found that the white light of the projector was still on. Considering that the total power in this classroom might be insufficient, he took a deep breath and planned to turn off the white light.

But when he was about to turn off the white light, the white light shone on the safe, and Feng Heng discovered something was wrong.

He rubbed his eyes and tried to see clearly what he had just seen on the safe.

He thought he had hallucinations-

Because under the white light of the projector, I could vaguely see a faint color around the keyhole.

If you carefully identify the four keyholes, the colors displayed from left to right, are:

Dark red, indigo, green, and orange.

Why describe all these colors?

These colors do not use monotonous solid colors, so there must be something strange.

So Feng Heng will remember these colors for the time being, so as not to have any problems in the future, and then he will get stuck in the level.

After putting the key into the small bottle, place it into the keyhole of the safe one by one according to the color displayed on it. Every time you put it in, you must stop there and listen for a while to hear if there is an alarm sound.

When the liquid in the bottle is useless, three keyholes on the safe have been inserted.

It seems that the effect of this bottle of liquid can only make the three keys effective.

After Feng Heng said "tsk" and put the remaining key into the last keyhole.

"Click!"

After twisting all the keys, the door of the safe suddenly popped up.

Feng Heng found a pink and tender mobile phone in it. After pressing the boot button, the cover of the super girl's heart was displayed in front of him. The guilt that he had just looked through the girl's diary came again.

Feng Heng endured his inner guilt and put his cell phone in his pocket.

Just as Feng Heng took out his hand from his pocket, the system's sound rang again.

"Candidate Feng Heng has completed the exam and has submitted his papers in advance."

"Please wait for the start of the next exam in the waiting area. The candidate will receive an item given away by the examination system. The item is engraved in the next airport exam and can only be used once."

"Please note that the second candidate who submitted the papers in advance has appeared."

"I would like to remind you that there are only two people who have obtained the qualification to give away items in the examination system. Please seize the time."

Just hand over the paper after getting your cell phone?

Feng Heng was not clear about the rules of this game copy, but just understood that as long as you find the phone, this copy will be handed over.

"bite!"

There was a vibration in his pants pocket, and Feng Heng was a little scared. He reached out and touched it. It turned out to be the pink mobile phone he had just obtained.

The reason why the phone makes sound and vibrates is that the phone is sent a message.

The general meaning is to ask the candidates who have finished the exam to come to a rest area specially for the candidates who have finished the exam to rest according to the instructions on a small map attached to the message.

It is worth mentioning that there is also a prompt above.

"When candidates finish the exam and go to the rest area, they can carry an item they get from the copy with them. Be careful to only get one. If they take it more, they will be considered a foul by scanning the door of the rest area, and the exam will be disqualified."

Feng Heng glanced at the mess in front of him. The transparent liquid in the small bottle turned brown and red at this moment, and it looked like it was contaminated by rust. Now it seems that this bottle of potion is useless.

Safe, projector, diary.

Sure enough, there is only one diary that can be carried with you?

Before leaving, he glanced at all the items in the classroom again with concern, Feng Heng turned around and left the exam room where he had been there for only a few hours.

Just as I handed in the papers myself, the black space around the classroom gradually disappeared.

Outside the window, replaced by teaching buildings that have become ruins. The dark and dull weather gave Feng Heng a feeling of breathlessness. When he pushed open the door of the classroom, he was frozen air coming towards him.

While gasping for breath, Feng Heng still couldn't get rid of the feeling of being pinched by someone.

Is this the cloudy day mentioned in the diary?

It's really interesting.

After finally adapting to this weather, Feng Heng looked up at the black smoke in front of him.

Since I just finished answering and handing over the paper, the black smoke in front of me, that is, the virtual entity of the invigilator before me, has always been ahead of me, as if leading the way for me.

Since there is an invigilator leading the way, why do you still need that small map?

Feng Heng was a little strange, but he still looked at his mobile phone and followed his "Dear Invigilator" Black Smoke.

——

Invigilator room.

"Yes, Lao Heiyan, you are a very good player."

When the news of Feng Heng handing over the paper came from the loudspeaker in the invigilator room, a person in charge who was sitting in the corner closed his eyes and relaxed. He opened his misty eyes and glanced at his colleagues around him. After seeing Feng Heng's figure on the black smoke screen, he immediately stood up and patted Black smoke on the shoulder with a smile on his face.

"If I remember correctly, the dungeon you are responsible for should be one of the most difficult dungeons in this game, right? It can be unlocked in such a quick time and get system prompts. This player is really good."
To be continued...