Not ashamed to ask questions is always one of Cheng Yu's excellent qualities. Since he is puzzled, and now he has an omniscient and omnipotent old London by his side, Cheng Yu will never miss such an opportunity.

Cheng Yu asked: "I will check the device you mentioned that is equivalent to a fixed pulley, but now there is a new question, how can the bedroom door be closed?"

Old London suddenly burst into a strange laugh, as if mocking Cheng Yu for complicating simple things.

"Old London, I said you're almost the same..." Cheng Yu's tone was a little unhappy.

Old London stopped his smile in time and said, "Mr. Cheng is actually limited by habitual thinking. The bedroom door can be easily closed without any skills. Mr. Cheng should have found traces of friction on the door handle facing inward, right?"

Cheng Yu nodded, and Old London continued: "Ms. Su tied the silk thread to the door handle, and then used a little force to completely open the door. Then the door would open to the maximum angle, gain a rebound force, and finally close it to form a two-fold secret room."

Cheng Yu was stunned. He never expected that Old London would give such an answer.

"That's so simple? But will the door make a loud noise when it hits the wall? It's in the middle of the night, isn't it exposed?"

Old London shook his head and said, "So is Mr. Cheng bound by habitual thinking? The maximum opening angle of a door may not be stopped if it encounters a barrier. In this villa, there is no barrier behind the door between each bedroom and the living room. In theory, the maximum opening angle of those doors should be 180 degrees, because there is a wall on the edge of the door frame. Most doors are like guest room doors, and the maximum opening angle of the door is only 90 degrees."

Cheng Yu quickly recalled that, indeed, including the guest room door, most doors in the world seem to be installed against the wall, and they are all opened in the direction of the wall, so the maximum opening angle of most doors is only 90 degrees. Therefore, people often install a base on the wall with the functions of suction and anti-collision, and install the other half on the door. This can effectively prevent scars from hitting the wall when the door is pushed open, and at the same time avoid making too loud noises. At the same time, it can also ensure that the door can be sucked on the wall when it needs to be opened.

The door between the bedroom and the living room here is not opened in the corner, maybe because that side is not a wall but a floor-to-ceiling glass window. If the door is opened in the corner, no matter how anti-collision device is installed, the door will hit the floor-to-ceiling window countless times. The glass is not as reliable as the wall, and it will be a very dangerous thing if it breaks. Therefore, the maximum opening angle between the bedroom and the living room in the guest room should theoretically be 180 degrees.

"So, the hinge of that door has been specially treated to ensure that the door will not open to 180 degrees and hit the wall?"

The LED lights on Old London were flashing wildly, and it said: "Yes, Mr. Cheng, the reason why most doors are installed on the edge of the wall is because the opening angle of the door is actually 90 degrees, and the center-wide door will be the kind that can be opened to 180 degrees. But if you think about it carefully, do many such double-open doors be treated on the hinge, and at most they will be opened to 120 and 30 degrees, without allowing them to be opened to 180 degrees. Especially for this kind of interior door, this is even more so. Just a little small design is needed to avoid all the noise that appears in the future because of this door. Old London thinks that all designs are

Those who are willing to do this. In order to make the rotation of this door more round and smooth, when choosing a hinge, the owner also carefully selected it. Finally, he chose this hinge that has buffering and slowing down but has certain elasticity to avoid making the impact sound between the door and the door frame when it opens to the end. Therefore, it is not easy for the bedroom door to remain open, because with a little force, it will open to the maximum angle and rebound back to a closed state. The lock tongue in the bedroom is also designed with a lighter spring, so that when the door automatically rebounds, the sound of the lock tongue being held can be as light as possible. Anyway, the door between the bedroom and the living room is actually more symbolic."

Cheng Yu completely understood that it was such a simple thing to close the door. This was really a blind eye to Cheng Yu. He didn't think about it in this regard and was always thinking about what the murderer used. The discovery of the silk thread became his constraint, which made him think that the reason why he had to wrap the silk thread on the door handle was a special function.

Moreover, in Cheng Yu's mind, what he was thinking was that Su Xi was pulling one end of the silk thread outside the window, and the middle part of the silk thread was wrapped around the door handle, and the other end was the device that could be used as a fixed pulley on the door frame of the terrace door, and finally clamped on the bulge of the crescent lock.

But now after Old London's explanation, Cheng Yu finally understood that the traces on the door handle had nothing to do with the crescent lock. Su Xi even probably used two wires. One wire was buckled on the door handle to ensure that the door remained open. The other wire was directly folded from the door frame to the door on the terrace. After she buckled the crescent lock, she could use skill to recycle the wire, and then pull the wire tied to the door handle with force. In this way, the door of the bedroom will be opened to the maximum angle, and finally turned back to the closed direction due to elastic force, and finally formed a closed state. Su Xi only needs to use another trick to recycle the wire on the door handle.

This chapter is not over, please click on the next page to continue reading! But according to Locar's law of exchange, as long as you enter and exit a certain occasion, material exchange will definitely occur. Therefore, the wire finally left some extremely slight friction marks on the door handle, so that Cheng Yu could restore the truth of last night.

Then, next, I will only go back to Bai Xiaowen's room and see what is available above the door frame of the terrace that can be used as a pulley. I don't even have to go to Bai Xiaowen's room. Anyway, the layout and decoration of each room in the villa are exactly the same. There will be things that will appear in Bai Xiaowen's room, and at most it will be a mirror effect, with a slightly different direction.

"Okay, Bai Xiaowen's problem is over. Then the next one is the problem of Deng Jingliang and Xie Yanwen."

Old London seemed to complain with a headache: "Mr. Cheng, you have too many questions. Moreover, have you already understood the little things between Mr. Deng and Mr. Xie? What else can I ask?"

"Deng Jingliang did fall for Xie Yanwen's trick, right?" Cheng Yu ignored Old London's complaints at all, but asked his own question directly.

Old London replied helplessly: "Mr. Xie stretched a bowstring above Ms. Su's door frame, and a small steel needle was tied to it. Of course, the steel needle was soaked in high-purity anesthetics. According to Old London's judgment, as long as some vibration force is generated nearby, the needle will be emitted. The specific degree of this vibration should be reached, Old London believes that even Mr. Xie himself is not very sure. Of course, he must have gone through many tests.

The vibration caused by the closing of the door can most of the time make the fine needle emitted. In fact, whether this mechanism can take effect is very accidental, because the movement of the closing of the door may not be able to fire the fine needle. Even if the fine needle is shot, there is a very high probability that it will not hit the person. Even Mr. Deng was not standing at Ms. Su's door at that time and was still suffering from a disaster. It can only be said that the firing direction of the fine needle actually has a big problem..."

Cheng Yu was silent and thought to himself that if Su Xi really came back, she would open the door and close the door. Even if the needle was fired, it would be very likely that it would not hit Su Xi. On the contrary, Deng Jingliang was standing at his own door but was affected.

"Of course, Mr. Xie doesn't have to do it either. He is trying his luck himself. Mr. Cheng's reasoning is very correct. It is indeed Mr. Chen who told Mr. Xie about Ms. Su's allergic to ultraviolet rays. I have to say that Mr. Chen is really a person who is too capable of chatting. He has an inappropriate idea of ​​Miss Xiaowen, and his personal special habits in dating the opposite sex. He also has a history of dating with Ms. Su, and it was Ms. Su's cheating on her female boss that caused them to break up, etc., all of them mentioned to Mr. Xie."

Cheng Yu's eyes turned black and he touched his forehead, thinking that Chen Yu was really... his mouth was so shattered! He dared to tell others that this guy was really too vague. If he hadn't known that this was just a virtual space and he wouldn't have had too much contact with this strange seven, if he had talked to Chen Yu for a while, Cheng Yu would have known these gossips long ago.

"Mr. Xie is obviously targeting Ms. Su, but he didn't expect that while he wanted to attack Ms. Su, Mr. Deng also targeted him. Moreover, Mr. Deng took the initiative to create opportunities, but he was just Jiang Taigong fishing. If that needle could shoot Ms. Su as she wished, and there was no one in the villa at that time, then his plan would be successful. Because no one had evidence to prove that Ms. Su was killed in the villa. And if the needle was not fired, or if it was fired but failed to shoot Ms. Su, the possibility of being discovered was very low."

"But there is another situation, that is, Su Xi was shot and fell to the ground by the anesthetics. However, she didn't come back alone, or you were still in the villa in the old London at that time, so Xie Yanwen actually had no chance to attack. Of course, even so, he would not be in too much danger. At least no one could provide evidence to prove that the needle was set by him. Even because he had been paying close attention to the movement in the corridor, when Su Xi fell to the ground after being shot, it would definitely make a sound, and Xie Yanwen could quickly come out of the room, pull out the needle that proved that Su Xi fell was not an accident, and then recycle the bowstring on the ground. Unfortunately, he couldn't wait for Su Xi, but waited for Deng Jingliang who also wanted to attack him. Moreover, Deng Jingliang did not fall into a complete coma."

Old London stopped talking, and it has been said that Xie Yanwen set up an agency and led to Deng Jingliang being attacked.

But Cheng Yu's question was not over yet, and he asked again: "After Deng Jingliang was shot by the needle, he knew the existence of the needle, so it was normal for Xie Yanwen to recycle the needle or not, that needle was not left at the crime scene. For that bow string, Xie Yanwen must have thought of dealing with Deng Jingliang's affairs first and then recycling it, but unexpectedly, Deng Jingliang woke up and fought back, which led to him fleeing in a hurry, so he could not recycle the bow string. After Deng Jingliang chased him out, the two had a fight in the bush..."

Old London interrupted Cheng Yu's narration and said, "The place where they fought was not in the bushes, but was next to the fountain pool in front of the villa. Mr. Xie was kicked over by Mr. Deng, and his forehead hit the edge of the fountain pool. He immediately broke a big hole and bleeding a lot. Later, he was thrown by Mr. Deng with a hug and smashed it on the edge of the fountain pool. His calf was broken and his waist was also injured. However, at that time the effect of anesthetic seemed to be getting bigger and bigger. Mr. Deng was a little stunning, and Mr. Xie got into the bushes. When Mr. Deng chased him, he was tripped by the vines under his feet.

The spoon in his hand accidentally pierced into his throat. Mr. Deng witnessed all this when he chased into the bushes. He returned to the fountain pool and washed his face with the pool water. He obviously became much more awake. He simply treated the blood on the edge of the fountain pool. In fact, when you returned to the villa, if you pay attention to the fountain pool, you will find that there is a large area wet here. It’s a pity that you didn’t seem to pay attention, and you have been delayed in the villa for a long time, so by the time you and Miss Manman walked towards the pier, the place had basically been dried up by the sun."

Well, Cheng Yu completely understood that for a detective, meticulous observation and constant vigilance are really sufficient and necessary conditions.

Of course, considering that Cheng Yu didn't know that the crime had happened at that time, he rushed back to the villa to try to stop the possible crime and did not care about observing it, which was understandable.

"What happened next was that after thinking about it, Mr. Deng decided to hide Mr. Xie's body, and then deceive everyone. Mr. Xie was not dead. He wanted to use such a person who no longer exists to create panic effects. Of course, what Old London saw was only the whole process of Mr. Deng hiding the body, and those behind were speculations from Old London."

Cheng Yu nodded and said with deep emotion: "What you analyzed is still very reasonable. He not only wants to make everyone panic. At the same time, if he really kills someone next, he can also blame him on Xie Yanwen, who is wandering outside and is already dead."

Seeing that Old London seemed to want to go back, Cheng Yu hurriedly said: "There are two last questions. First, did Deng Jingliang tell Liu Manman about the truth about all this?"

"No, when Miss Manman asked him the truth with the intercom equipment, he said that what he told everyone downstairs was the complete truth. He really didn't know whether Xie Yanwen was dead or alive, nor where he was."

Cheng Yu was silent, which surprised him, but he felt it was reasonable. At the beginning, Cheng Yu asked Liu Manman this question. If only the siblings were left in the end, would she attack Deng Jingliang? Cheng Yu asked her to think carefully about whether Deng Jingliang could attack her.

Of course, Liu Manman's answer was no, but now, from Deng Jingliang's opinion, he still had a hand after all.

It’s not that he had already thought about not being good for Liu Manman, but at least, he left such a possibility. Otherwise, Cheng Yu would not think of any need for him to keep Liu Manman in the dark. If he didn’t move at all, letting Liu Manman know that Xie Yanwen is dead will make the two of them even more united, because they don’t need to be distracted and consider Xie Yanwen’s issue. Guo Ping'an and Su Xi undoubtedly have a lot more disadvantages than them in this regard.

The most unpredictable thing is that in the face of 100 million US dollars, even family affection will face extremely severe challenges. Cheng Yu can only hope that Deng Jingliang will only keep one move and will not put these into reality. Otherwise, even if Liu Manman finally survived, she may feel lingering fear about this in the future.

Cheng Yu remembered a sentence, but he didn't know who said it. It was said that no one had no price. If he didn't sell it, it was just because the price was not enough. At least in this virtual space, this sentence is still correct.

"The last question is where Xie Yanwen's body is..."

Old London pulled the wheel and said while rolling, "Mr. Cheng, you are too much. If Old London tells you this, it would be better to tell you how to leave this island directly."

"I said, I won't tell anyone about the content of the conversation between us." Cheng Yu said while chasing him.

Old London is still "rolling back": "Mr. Cheng, please think about it, why can Old London tell you so much? But now, are the things you want to do ineffective? "

Cheng Yu was stunned for a moment and soon understood what Old London meant.
Chapter completed!