Feng Yan simply sat cross-legged on the ground, holding his chin with his left hand, and his right index finger still tapping on the outside of his thigh, and began to think, and at the same time inadvertently began to talk to himself. Pen fun and pavilion www.biquge.info

"So go over all the tips that Clem has just given and extract some information from them about turning or turning back. Well...... Thinking of it, when I was about to leave, he was afraid that I would forget some questions I wanted to ask and come back to him, so I would lose my way, so he specifically instructed me not to look back after entering the rainbow door, the rainbow door opened and was randomly teleported to a long corridor door, and if you turned around and went back from the door you just came out, you could not return to the corridor you just came out of, but also teleported randomly......"

Speaking of this, Feng Yan fell silent, he stared at the colors, numbers, and U-turn marks and thought for a few seconds, and said secretly: "I see, that's what it means." ”

Feng Yan got up, pulled out the white paper with graffiti just now from the desk card, and put it in his pocket, although he hadn't been able to understand this prompt, but it was certainly useful information, he chose to carry it with him first, and then he straightened his collar, came to the main seat of Harlan Sanders, looked around the conference table, and already imagined in his mind the many viewers sitting on the chairs waiting for him to decipher.

"Ahem, I know everyone must be in a hurry, so I'll start explaining directly, some students may not be able to keep up with their thinking, it's best to take notes."

This scene is also quite terrifying, a long-haired man in a hospital gown and a cloak over his shoulders is talking to an empty conference room, and it gives me goosebumps just thinking about it.

Feng Yan said fanatically to himself: "Reasoning ~ begins!! ”

"First of all, the bright hint given by the system is to sort the four buckle pads in the order of numbers, and the final order of opening the door is purple, blue, blue, and green, and I emphasize here that this hint is correct, but it is only a hint, this puzzle is a bit difficult, and it is very winding. Then the second hint is about the U-turn mark, this is for sure, but it is difficult to combine the U-turn mark into colors and numbers, but after combining Clem's prompt, the three can be connected in series, and everything can be easily solved, which we will talk about later.

First of all, we mark the seven colors of the rainbow as 1~7, which is: 1 red, 2 orange, 3 yellow, 4 green, 5 blue, 6 blue, 7 purple.

However, the colors and numbers in the plastic buckles we got did not match this mark, they were: 1 purple, 2 blue, 3 blue, 4 green, only the green number 4 matched.

Then the combination of the two verifies the above statement, that is: the system's prompt is to let us open the door of the corresponding color according to the number order inside the buckle pad, instead of letting us open the door according to the order of the rainbow seven colors, if the system is to open the door according to the order of the rainbow seven colors, then the number inside the buckle pad should match the number of the rainbow seven colors.

In fact, the system can do the same, but then the puzzle will be simpler, and of course, there will be no more U-turn markers.

Next, let's review the three doors I just walked through, the three doors I opened, the colors were 'red, yellow, green', but after entering the door, I turned my head to look, the color of the door I came out did not match the color of the door I came in, and even the location changed, at first I thought it was also random, but after three doors, I deduced that the internal space of the door may be random, but the color and location of the door are not random, but there are traces to follow.

I entered the red door in the upper left corner of the top view of the corridor, and when I turned around, I saw a purple door, and the position changed to the bottom right corner of the top view of the corridor, and the yellow door corresponded to the cyan door, and the position was also changed, only the green door corresponded to the green door, and the position remained the same.

So let's simply make a connection problem, red is the number 1, purple is the number 7, and together it is 8. Yellow represents the number 3, cyan represents the number 5, which together is still 8, and green represents 4, plus the same green, it is 4+4, which is still 8.

Based on this piece of information, it is not difficult to judge that the color of entering the door and the color of going out are constant.

So let's go back to the hint of the four buckle pads, please allow me to repeat them again, the tips for the buckle pads are: 1 purple, 2 blue, 3 blue, 4 green.

So what should be the color on the other side of the purple door? Purple should correspond to red, which has already been explained in the connection question above, and is calculated based on the color of the entrance and door. And the number representing red is '1', guess what, the number in the purple buckle is actually '1', the blue corresponds to the orange, the number representing the orange is '2', hey actually matches the number in the blue buckle pad. Cyan corresponds to yellow, and the number representing yellow is 3. Green corresponds to green, and the number representing green is exactly 4, all right, and the number of color matching in the buckle pad is obtained in this way.

Do you understand this? The U-turn mark indicates that we enter a door and immediately turn around and open the door behind us, enter the purple door, turn around and re-enter the door that just came out, at this time it becomes a red door, after entering the corridor we find the second door in the strict sense, the blue door, immediately after entering, turn back and open the door that has turned yellow, and so on.

The U-turn mark is to give us an assumption that is not stable, and it is of course correct to use it forcibly, but it is just a little panicked, and the connection result inferred by the color of the number is an important basis to support this assumption and make it a fact.

In fact, we have to open a total of 8 doors, but this is not contradictory and repetitive, because Clem has already prompted that after opening a door, if you go back from the door that just came out behind you, you will not return to the space you just entered, but randomly enter another space, that is, based on entering and exiting once, we actually only pass through the rainbow door 4 times, but due to the random space mechanism of entering and exiting, we enter 8 spaces. ”

Feng Yan took a deep breath, feeling that the pores of his whole body were open, his cerebral cortex was very itchy just now between thinking and explaining, which was a manifestation of overthinking, but this itch was very refreshing, which made Feng Yan want to stop.

Feng Yan looked around and said, "Now the students should know what to do next, right?" Class! ”

He kicked Harlan Sandoz down, then strode towards the purple door, then opened the purple door, stepped in one step, the white light flashed, the door behind him closed immediately, he regained his vision and turned around without hesitation, while closing his eyes and saying, "Red!" ”

As soon as he opened his eyes, the door that had just closed automatically was really red, and at the same time, his position also changed to look down at the upper left corner, Feng Yan smiled proudly, snapped his fingers and immediately opened the red door, entered another corridor, and went straight to the blue door, after opening the blue door and stepping in, the white light was still dazzling, and the door behind him closed automatically with a bang, Feng Yan turned around and made a 'I am optimistic about you' emoji posture, pointed to the door behind him and said: "Orange." ”

The door behind him was orange, and Feng Yan smiled proudly: "Although the puzzle is difficult, there is always a way to solve it, as long as it is a puzzle that can be solved, no matter how difficult it is, it is only a matter of time before it is difficult for me." ”

After opening the orange door, Feng Yan went straight to the green door, drawing a scoop according to the gourd, he turned around after entering and the color of the door was guessed by him, of course, it was yellow, the last green door He turned around and paused a little after entering, the color was still correct, the doors to enter and go back were all green, but this time when he opened it again, the corridor inside was probably the butcher's territory, so he didn't rush to open it immediately, but thought about something.