Taking advantage of their production, we also went up for lunch.

After dinner, Hu Ling curiously asked what Xu Qing's guess was.

Xu Qing said: "I use the exclusion method. The secret room's mechanism is so frightening. Once it is touched, there is no doubt that one will die, so one must not stand in the secret room. Think about it for yourself. With your Kung Fu, can you get out of the secret room after you get the secret script? "

Hu Ling shook his head: "impossible, it's almost a moment, it's too late for us to turn around."

Xu Qing: "so, the person who stole the secret script must have touched the mechanism outside the secret room. It's good to know that. He may have replaced it with something when he was taking it

"That mechanism can be regarded as a balance. As long as the balance is not tilted, the secret script can be replaced at a very slow or very fast speed within the controllable weight range. Substitutes can be tied up with very thin ropes, waiting for people to go outside the chamber of secrets and collect them. "

"He can't take it back faster than the mechanism inside, so he must destroy the mechanism of Shimen, or the substitutes will be left in it and can't be taken out."

The cause and effect can be inferred by Xu Qing, but it's not easy to guess in the middle.

In the replacement process, there must be a weight range that will not touch the mechanism.

Seeing that they didn't quite understand Hu Ling, Xu Qing thought about it and said, "for example, the weight of the secret script is 535g. The mechanism in the groove can bear the weight of 530 to 540. Within this weight range, the mechanism won't be touched."

"So as long as the weight of the substitute is between 53 and 54, and the replacement is careful enough, the weight of the mechanism is always within this range, then the mechanism will not be touched."

"Including what I said just now, it's feasible to help a small rope with very little weight on the substitute. Do you understand this time?"

Hu Ling they suddenly realized and nodded: "I understand."

Qin Tianye looked at Xu Qing in surprise for the first time: "how do you think of such a complex thing?"

Xu Qing: "of course, with the brain."

Qin Tianye Is that saying he has no brain?

Xu Qing then said, "if you can know the weight of the secret script and the structure of the mechanism, and know that the secret script can be replaced, it's very likely that this person is among the eight people, including the cabinet leader, two elders and five disciples."

Hu Ling: "is there anyone else?"

Xu Qing: "there may be someone else who has read the secret script. The cabinet leader didn't tell us, but now, these eight people are the most suspect."

Hu Ling: "who do you think it will be?"

Li Changting: "if there is no insect powder in the chamber of secrets, these eight people are suspected. If the insect powder is really like what the cabinet leader said, once it is stained, it can't be washed off, then the suspects are the first, second and third disciples of the most advanced chamber of secrets."

Hu Ling Leng Leng, suddenly realized: "Oh, these three people because into the chamber of secrets, so even if the insects fly to them will not cause people to doubt, because they are in the exploration, so they will be stained with!"

But Hu Yi said, "what if it wasn't for these eight people?"

Xu Qing: "there are two possibilities, either there are spies in Qianji Pavilion, or Qianji Pavilion deliberately planted us."

In the afternoon, they made two bamboo slips similar to scrolls.

At the same time, they also repaired the mechanism in the secret room. Of course, there was no concealed weapon in the mechanism. After all, it was only an experiment, so it was unnecessary to make it so realistic.

The eight owners of Qianji Pavilion took and read the secret script, and the substitutes they made were almost the same weight as the secret script.

as like as two peas, the weight of a substitute is not the same. After all, people are not machines, and they cannot make two identical weights. The weight is different, but the error is negligible.

Next, the elder of Qianji Pavilion tried it first.

When the bamboo slips are put into the groove, you can see that the groove is slightly depressed. When the elder takes up the bamboo slips, there is a slight sound in the secret room, and the mechanism is touched.

It shows that the weight of this bamboo slip can replace the scroll.

Later, the elder put the bamboo slips back, picked up another bamboo slips to be replaced, and tried to exchange the two bamboo slips quickly.

However, no matter how fast he is, he will still touch the mechanism.

Until Xu Qing suggested that he slow down, the slower the better, to ensure that the position of the groove will not change.

Elder takes a deep breath. After several unsuccessful attempts, he gradually finds that he can replace part of the weight by pressing the groove with his hand.

This time, he succeeded.

After replacement, the mechanism is not touched. At this time, the thief only needs to go outside the door and take back the substitute in the groove with string, which is enough to escape the mechanism in the secret room perfectly.

After the successful replacement of the elder, the expression of all the people in Qianji Pavilion is unbelievable.

The successful replacement of the secret script shows that there is a loophole in this mechanism, and it is precisely by taking advantage of this loophole that the thief steals the secret script cleverly.Beyond that, there is no other possible performance that makes sense.

The elder looked at Xu Qing inconceivably: "how do you know that the thief stole the secret script in this way?"

Xu Qing: "I also reasoned out after seeing the mechanism."

"My wife is really brilliant," said the cabinet leader

Xu Qing: "I'm flattered, but we just reasoned out the modus operandi and didn't find any evidence."

The elder nodded: "that's right. If you steal the secret script in this way, even people with low martial arts skills can do it."

Xu Qing: "it doesn't matter whether his martial arts are high or not, but this man must be familiar with the organs here. Otherwise, how can he know that the secret script can be replaced? If not, will he be shot into a sieve? This kind of thing can't make fun of life. How dare you start without full assurance? "

As soon as the words came out, all the people in Qianji Pavilion were silent.

They can't deny that Xu Qing's words are reasonable, but Xu Qing's words obviously point to the fact that it was done by people in Qianji Pavilion.

And familiar with the mechanism here, can know the weight of the scroll, nothing more than eight of them.

Xu Qing had never been in Qianji Pavilion before. How could they possibly study the secret organs in their secret room.

"And there's one thing I haven't said clearly." Xu Qing then said, "the other party does not hesitate to destroy the mechanism of Shimen, but also wants to take out the things that replace the secret script. Why on earth. It's very likely that when others see this substitute, they will see some of his characteristics from it. Just like when the pavilion leader showed us around before, we can see at a glance which apprentice the mechanisms came from. "