[Well, this rule hasn't changed much. 】

The first thing to do is naturally to check the corpse, Du Ziyuan originally meditated in his heart, but as soon as he thought that he was doing a show, he simply talked to himself and said everything he thought.

"First of all, the most unnatural point is that the knife is inserted in the back, and he actually asked me to find the murder weapon, doesn't this clearly tell me that the deceased did not die from this knife? Or is it just trying to deceive me, so that I can be clever but be mistaken by cleverness? No, no, no, if you really want to deceive me, this method is inevitably too low-level. ”

Du Ziyuan first checked the wound, and the sharp blade penetrated the heart, but there was not much blood on the clothes.

"There is obviously a blood groove on the knife, but it doesn't rush blood, this can only be the effect of making up the knife when the blood pressure is insufficient after death, so what is the real cause of death?"

He directly ripped off the deceased's shirt, and did not find a second wound, although the corners of his mouth were bleeding, they were not black, and the possibility of poisoning could be preliminarily ruled out.

"But then again, the dead man did it too realistically. "Because it's a virtual world, the corpse is also perfectly reproduced, unlike silicone dolls like on Earth.

"It's a pity it's a man. Du Ziyuan casually threw away the corpse and began to check other places.

There was an unfinished letter on the desk, which was covered by the corpse just now and could not be seen, but now that Du Ziyuan moved the corpse, it was naturally revealed.

He looked at it, and the letter was full of some gimbled words, which everyone recognized when they were separated, but they couldn't form a coherent sentence at all.

"It seems that there is a secret letter to interpret the code. ”

Du Ziyuan thought about it carefully, the code should have been given before he came, if he didn't miss the clue.

“1579...... It doesn't seem to be used here, those books...... Probably not. Du Ziyuan looked at the letter carefully, and if there was anything in this letter that made him feel most disagreeable, that is, the spacing between the words was too wide. Usually the word spacing should be smaller than the line spacing, but the words on this letter are evenly spaced, and it feels like a ...... When I was in elementary school, I wrote the same words on the grid book!

"Grid Book...... Lattice...... Jiugongge!" Du Ziyuan suddenly realized that he seemed to have seen a child walking in the nine-palace steps before coming in.

"How did he get here......? ...... here again."

When Du Ziyuan was decrypting the letter, others also discovered the letter at about the same time. It's too obvious after all.

It's just that not everyone can solve it.

Drunk tonight didn't care about the two little boys at all, so she didn't know anything about the nine-square grid at all, so naturally she couldn't decipher the secret letter. After looking at it for a while and realizing that she couldn't understand it, she went to look elsewhere.

Soon, she found a dark compartment in the back of the bookcase. However, this secret compartment requires a four-digit password to open.

"Four-digit password...... Ahh After she arrived, she got out of bed and found that the sheets were a little messy, so she went to habitually tidy them up, and found the number "1579" like Du Ziyuan.

After entering the password, she found some clues. Inside the dark compartment are a number of poisons, each with its own special effect, according to the description of these poisons, the cause of death of the deceased is determined to be one of the poisons called "Dream Return".

This poison is a psychotropic poison, so there is no detectable sign of poisoning on the surface, and the poisoned person will die quietly after falling asleep. The only way to detect this is to puncture the center of the deceased's eyebrows within 24 hours of his death, and a small amount of pale blue blood will come out.

Drunk tonight did so, and did find blue blood.

"But this poison is obviously hidden by himself, who could have poisoned it? Could it be suicide?" Drunk tonight found out the cause of death, but he was even more confused.

......

Among the six people, there were a total of three people who unlocked the secret letter of the Nine Palaces. They are blank (Du Ziyuan), Xuanbing City Lord and Mei Youxiao Lonely.

Mei Youxiao's lonely appearance is a slightly thin middle-aged man, he is obviously a fairy, but he wears a pair of glasses, and he looks very intellectual. The first time he saw the secret letter, he thought of the child's nine-palace step before, and successfully solved the content of the letter.

According to the letter, it can be inferred that the deceased was a detective who was commissioned to investigate the truth of an incident and seemed to have found the culprit, but died before he could write down his name.

"Is it the prisoner who did it in order not to expose himself? No, if this is the case, it is impossible for this letter to stay," Mei Youxiao reasoned silently, "The murderer should be someone who does not know about it." ”

He has also written some reasoning, although it is not hardcore enough, but the general investigation methods are still understood.

Soon, he also discovered the dark grid. It's a pity that he doesn't know the password. Then you have to give up this place: "Let's go find something else." ”

......

Li Canghai (Xia Wuyi) is undoubtedly slower than the others. She (who used "she" during her transformation) found the letter, but she couldn't decipher it, and she also found the secret grid, but she still couldn't open it. Fortunately, she was in a better state of mind, and she was not discouraged, and continued to search for other clues.

Searching for it, she found a piece of spiritual jade in the deceased's sleeve. Clicking on the Lingguang Jade, she found that there was only one cloud chat function in it, and the deceased's cloud chat number had been memorized on it, and she only needed to enter the password to log in.

"Password...... What is the password?" Li Canghai tried to recall what he had just seen and heard, but he couldn't find anything like a password. She didn't know the date of the deceased's birthday, so she couldn't try.

Just as she reluctantly turned her gaze elsewhere, she suddenly caught a glimpse of the books on the shelves.

"Huh?" she suddenly realized that the books were exactly the same as the books in her room, and that there were some over there and some here. It's just that...... It seems to be in the wrong place.

"Is this going to be placed according to the rules?" she tried to move the books, the positions of the books in the room she remembered.

When she was ready, a small drawer popped up at the bottom of the bookshelf, and a book was placed inside. The title of the book is "Instantaneous Sword Technique", which is a martial art.

......

"Instantaneous Sword Technique?" Du Ziyuan also discovered this secret book. "It seems that the kid just now used a trick called Instant Kill. ”

Du Ziyuan flipped through it, and sure enough, he found this trick. There are a total of five pages of notes for this trick, and Du Ziyuan tried to connect the page numbers of the five pages and enter them into the cloud chat client, and he successfully logged in.