Master Blacksmith in the Blade of Demon Slayer

Ichiro smiled: "I'm thinking, if the content on that door is really so important, will I find some related content... For example, is there any mechanism in the room that we haven't discovered ourselves? ? And need to use the knowledge on that door to crack?"

Tetsuzhi Cangsuke felt that this idea was also very peculiar, and did not refute, but seriously considered it: "It's not that there is no such possibility."

Ichiro's eyes lit up: "Do you think so too?"

Seeing him like this, Tetsuki Cangsuke couldn’t help but laughed: “Although it’s not impossible, it’s unlikely. This time is an opportunity for us. Once we can understand the mystery of these organ techniques, then For us, our own skill level will be enhanced. So far, although we have not gained anything, we are already on the right path. However, although there are possibilities, they cannot be completely possible. Take it as reality. Maybe our inference itself is also problematic. What about the simple irrelevant content on the door? We try to list the possibilities as much as possible, but don’t be particularly confident about each possibility, otherwise It’s easy to be disappointed if you do, and it will dampen your enthusiasm. But maybe it’s also very interesting in itself... a seemingly impossible possibility, maybe there will be an unexpected gain. Don’t give up any possibility, and don’t be too superstitious."

He patted Ichiro on the shoulder: "Eating, and leaving after eating."

Ichiro thought carefully about what Tetsuno Sosuke said, and found it a little convoluted and difficult to understand.

Tie Zhi Cangsuke took a look and summed it up in a relatively simple way: "Boldly assume, carefully verify."

"……Oh!!"

Ichiro felt that this seemed much easier.

The two of them ate breakfast in a hurry and went out after tidying up.

This trip was much faster than the first time. Before night fell, the two of them had arrived at their destination.

I lighted the torch and went in and came to the door unobstructed.

Ichiro was horrified, and all his hairs were about to stand up: "Teacher! Is this...is anyone coming?"

The door was opened when they left, and now after they came back, the door was closed again.

Tie Zhi Cangsuke did not answer, but observed the footprints on the ground.

Although he is not a hidden person, he has no relevant skills and unique skills, but the footprints on the ground are very clear. There are only two types, belonging to two people, and there is no footprint of a third person.

"No one has been here." Tie Zhi Cangsuke said affirmatively: "Here, there are only traces of the two of us coming in and out."

"Then this door?"

Ichiro's face turned pale.

Tetsuzhi Cangsuke was a little bit dumbfounded: "I found out that you are indeed less courageous than your brother. No one comes, it does not mean that the door will not close. When you opened the door before, you also heard that there were gears running inside. Sound, this shows that there is a mature mechanism structure inside. Because of the external force, the door is opened. But this opening may be just a delay device. After a certain period of time, it will close by itself."

"Delay device?" Ichiro wondered.

Tetsuzhi Cangsuke thought for a while and said, "It's very simple, you can understand it. Use a rope to lift a stone, pull the stone up, tie the rope to the tree, and then put a torch or candle under the rope. . This is the principle of a simple delay device..."

"The torch burns the rope, and the stone will fall down. The delay time is the burning process." Ichiro instantly understood Tetsuno Sosuke's meaning: "The teacher said that there is a torch hidden in this door?"

Tie Zhicangjie's face turned black: "Don't be fooling around."

Ichiro laughed suddenly, which of course was a joke just now.

After Tetsousuke’s explanation, Ichiro quickly understood what he meant.

Of course there is no torch in this door, but who said that only a torch can be used as a delay device?

Weight, objects, etc... As long as they are arranged cleverly and just right, everything can be the key to the delay device.

There must be a device in this door, which was triggered after a relatively long time, and then the door closed.

After I figured it out, I felt nothing terrible, and Ichiro immediately started preparing the white cloth.

The door is very tall, big, and very wide.

The two decided to rub the outside content first, and then rub the inside. Judging by the size of the door, these two rolls of fabric must be enough.

Tie Zhi Cangjie grabbed the head of the cloth, and a few people sprinted out to the top of the cave, poking Yang Yan into the gap between the gate and the top of the cave to temporarily stabilize his body.

Then he arranged the white cloth and fixed it, and Ichiro below started along the bottom of the gate and cut the white cloth.

Tie Zhi Cangsuke came down again, clutching the head of the cloth, repeating what was just now.

In a short while, two people covered the entire door with white cloth.

Ichiro brought water and ink, and looked at Tetsuzhi Cangsuke.

Tie Zhi Cangsuke said, "I am in charge of the upper part and you are in charge of the lower part. After this door is over, open the door and rub the contents inside."

Chapter 416: Story

Master and apprentice are busy with each other!

The tossing up and down makes it easy to hang the cloth and troublesome rubbing, mainly because the door is too big.

If someone helps, it can be a lot easier to set up a stand, but no one comes to help.

In the course of his busy work, Tetsuzhi Cangsuke regretted more than once that he should let the hidden person do this... But now it’s useless to say it. There is no turning back arrow when he opens the bow, so he can’t just run away after half of it ?

Turning around, let the delivery room Shiki Yoshiya find someone to get the other half back. When he asked why he got half of it, how should he answer?

I still want a face!

The one who gritted his teeth at last finally rubbed the front and back of the door. The master and apprentice had lived in the cave for two days.

Occasionally take a break and eat something, and find a place to sleep when I am sleepy. If I am too tired, I will tidy up the white cloth with the ink stains and look at the content...

In this way, when the work is finished, both of them feel like they have been reborn.

"Teacher, you should let me fight ghosts next time. I find this job is even more tiring than that."

Ichiro said to Tetsuzhi Cangsuke with both eyes blank.

Tetsuzhi Cangsuke was looking at the white cloth, frowning as he watched, waved his hand to make Ichiro stop talking: "Bring the box."

"Huh?" Ichiro was taken aback for a moment, and immediately sent the box to Tetsuzhisuke.

Holding the box, Tetsu no Sōsuke said to Ichiro: "There seem to be two stories before and after this door... The first story is a journey of a person to school. He first learned the words, and then he went to learn. Calculate the numbers, and then change to music...The first two are very common, but only music scores are even given."

Ichiro was refreshed and hurriedly came to take a look.

Sure enough, I saw a picture at a certain position above the white cloth, and there were two people on the picture.

One person sat there playing the piano, another person sat with his head hanging down, listening respectfully, and there was also a piano in front of him, but on the piano table, there was also an open book. There is nothing about it, and you can see the music score if you look closely.

This is a very inconspicuous little detail on the entire door. Even if you don’t get it to look at it, even if you know that there is such a place on the door, it will be difficult for you to find it for a while. Where the sheet music is.

Tetsunosuke took the box to his eyes, and Ichiro looked forward to it.

The time has come for the answer to be revealed!

Is it the final password?