Generally, there will be windows in the room for gout, and it is generally facing the door, but there is no room in this room, Hu Wei's first reaction is to look at the drawers, open the two drawers and find a flashlight and a note inside!

The note reads: The night gave me black eyes, but I used them to find the light!

Suddenly, Reba exclaimed: "Ah, come here, I found a clue, this painting turned out to be something similar to a safe, with a combination lock on the frame!

Hu Wei stepped forward and looked at Reba, and then complimented: "Wow, Reba is awesome, so amazing, we will definitely be able to get out soon!"

Reba smiled stupidly at Hu Wei's compliment, then looked at the thing in his hand and asked, "What are you holding in your hand?"

Hu Wei handed her the things in his hand directly and said, "Flashlight and note!"

After reading it, Reba wondered, "What does this mean? Is it for us to turn off the lights?"

Hu Wei replied: "Maybe, let's try it first, there are no new clues anyway!"

Reba jumped over and turned off the light, fluorescent words appeared on the wall, Reba looked at the words on the wall and read: "There are pheasants and rabbits in the same cage today, there is ~ yes, eh, why is there no number?"

Reba looked at Hu Wei suspiciously, and Hu Wei read it again: "There are pheasants and rabbits in the same cage today, how many heads are on it, how many feet are below, ask the pheasant rabbit about the geometry, selected from "Nine Chapters of Arithmetic, Pheasant and Rabbit in the Same Cage". ”

There is a blank space in front of the head and feet in this problem, there are no numbers on it, how to solve a binary equation without numbers, Hu Wei thought for a while and said: "You turn on the flashlight and shine on that empty place, there may be numbers!"

Reba obediently turned on the flashlight and did what Hu Wei said, but there seemed to be no response, and he still couldn't see other words, Reba said dejectedly: "Nothing! What a pit, this flashlight doesn't seem to be useful, and there is no response in other places, this thing won't be just for us to turn off the lights and move safely!"

Hu Wei thought for a while and said: "Probably not, this flashlight is placed in a drawer, if it is useless, it should be placed outside, just like these fruits and drinks, it should not be a clue, the flashlight must be useful!"

Reba asked rhetorically, "What's the use?"

"I don't know, but if this pheasant rabbit in the same cage problem is really in "Nine Chapters of Arithmetic", then I remember the title, it should be thirty-five heads and ninety-four legs, if I remember correctly, this is the number!"

Reba replied in annoyance: "What if you know the question, you have to answer the question, and I can't solve it, will you? Or do you remember the answer?"

Hu Wei patted his chest and said proudly: "Of course I can solve it, there is a solution in "Nine Chapters of Arithmetic" that is more interesting, I remember it very well!"

Reba was curious: "How interesting?"

Hu Wei smiled: "That's right, assuming that all animals can understand my words, and I let all animals raise their feet twice, then there will be 24 feet on the ground!"

Reba interrupted directly: "How can the chicken and the rabbit understand you?

Hu Wei smiled: "They can still sit on the ground! Because they only have two feet, after they are all raised, there are only rabbits' feet left on the ground, and at this time, each rabbit still has two feet on the ground, so twenty-four divided by two is twelve rabbits!"

Reba hurriedly replied, "So thirty-five minus twelve equals twenty-three chicks!"

Hu Wei snapped his fingers and said, "Bingo, the answer is correct, it should be this answer, so the password should be 1223 or 2312!"

Reba struck his enthusiasm and said, "This has to be for you to start saying that the question is right, if you remember wrong, then the answer we calculated is not wrong!"

Hu Wei gave her a reassuring look and said, "Don't worry, it's definitely no problem! Turn on the light, the flashlight can be turned off!"

Reba was next to the switch, directly pressed the switch, the room was full of light, Reba pressed the switch of the flashlight again, but the flashlight did not go out, but changed from a white light to infrared rays, Reba pressed it again, it went out, and no light came out!

Hu Wei walked up to Reba, took a flashlight, looked at it, and asked, "Where did you press it just now?" Why did I see infrared light just now?"

Reba was stunned for a moment and replied: "I didn't press anything!

Hu Wei took the flashlight and pressed the switch, it was a white light, and then it became an infrared ray when he pressed it again, Hu Wei adjusted the flashlight so that the infrared rays were on the wall where the font began to appear, and there were black spots in some places, but the light was on, and the fluorescent words could not be seen.

Hu Wei pointed at the empty place, and sure enough, the font appeared, and when he compared it, he found that it was the two numbers 35 and 94, which also proved that they had not changed the data in the "Nine Chapters of Arithmetic" and Hu Wei was not mistaken.

Hu Wei smiled: "This flashlight is quite magical, it will only appear infrared rays when you press it twice, and then it will show the font on the wall, which is a bit powerful!"

Reba began to be interested, and said: "Well, indeed, it's pretty good overall, for a moment it's like we're doing tasks in Running Man, the main thing is that the props are doing very well, this shouldn't have been promoted yet, we won't be here to do experiments!"

Hu Wei corrected her wording and said: "We are called closed beta players, they must have asked someone to practice this, but there may be a few small bugs in it, maybe we will encounter it!

Reba stood on the front of the picture of more than 20 inches, and changed it from 1223 to 2312 to successfully open the painting!