The air window is about one foot or two inches square, with wooden pins on it, and it is obviously already stuck in it.

Shen Mo turned his head and glanced at Yan Baiyu.

"There are no sword scratches on this air window, and they were sealed from it." Yan Baiyu said to Shen Mo: "So Ruiyun couldn't go out along this window."

When Shen Mo heard Yan Baiyu say this, he jumped onto the windowsill. After he stood on the windowsill, the lower edge of the window of the air window was right in front of him.

Shen Mo gently twisted the wooden latch across and then opened the ventilation window.

The window opened outward. When Shen Mo looked out, he saw the courtyard wall outside. It turned out that the window was opened near the back wall of the house. The pin on the transverse window was nailed to the bottom edge of the window sash with an iron nail. The wooden pin was in the shape of a gavel, and the iron nail just passed through the middle of it. So when you want to lock it, just close the sash and screw it from horizontal to vertical, and the window will be locked.

, it cannot be opened from outside.

Shen Mo twisted the pin. After he looked at the inside and outside of the pin, there were indeed no scratches caused by swords on it.

In this era, when thieves who slid door locks and stole the door, almost all of them would use the tip of the knife to pass through the crack of the door to pluck other people's door latch or window latch. So whether there are traces of swords on it is a very important clue.

After Shen Mo checked a little, a smile immediately appeared on the corner of his mouth.

He thought to himself: How could this wood be so flexible when it turns?

So Shen Mo twisted the pin across, and then tightened the window sash tightly. "Because this pin was locked from the inside," Shen Mo said to Yan Baiyu: "And when a person passes through the window and goes outside, when he closes the window again, since the wooden pin is crossed, even if his sword can penetrate the gap and reach here, it will not be possible.

The law touches this wooden pin.”

"So you can judge that this is not the passage where Ruiyun goes out, right?" Shen Mo said this and looked at Yan Baiyu with a smile.

"That's right," Yan Baiyu nodded: "After the window sash is closed, the gap is very small, so there is no way to insert the pin from outside again..."

"Do!"

Before Yan Baiyu could finish his words, Shen Mo gently knocked on the sash of the air window with the rosy sword in his hand.

I saw that the wooden pin that was coming across was shaken and turned and stood up after this violent vibration!

As soon as the pin was up, the air window was locked immediately!

"Ah!" Yan Baiyu, who was standing below, was stunned immediately when he saw this scene!

How is this possible? How did Shen Mo do this? Not only Yan Baiyu, but even Mo Xiaoluo, who followed in, opened his eyes wide in surprise!

Shen Mo smiled, and he pinched the wooden pin hard. Then he twisted it while pulling it out hard. Soon he pulled out the wooden pin and the nailed nails.

Then Shen Mo handed the pin to Yan Baiyu and said to her:

"Collaborately check the pin, and the nail holes of the wood pin are nailed in the middle. Moreover, the lengths of the two ends of the wood pin are exactly the same. But strangely, the weights of the two ends are very different. It should be that someone has done something on it."

Yan Baiyu was surprised and reached out to take the wooden pin. Then she twisted the iron nail in her hand and gently turned the wooden pin like a bamboo dragonfly. Sure enough, she found that one end of the pin was indeed obviously heavy!

"Because the pin rotates flexibly," Shen Mo said, looking at the air window: "And it is light and heavy, so when it is horizontal, it will stand up and lock the window with a force."

The pin was painted with brown paint. Yan Baiyu checked it and found no flaws. So she pulled out a knife from her waist and scraped the paint on it bit by bit.

When the paint surface was scraped off, a nail cap with an iron nail was indeed exposed from the end of the heavier end of the pin!

"It turns out that it is this thing that adds weight to one end of the wooden pin!" Yan Baiyu looked at the top in front of him in surprise, and thought to himself: "This kid is really as careful as his hair!"

By twisting the wooden pin, he felt that the pin was rotating very smoothly, and he could see at a glance the technique used by the criminal when entering and exiting the air window!

"Judgement based on the situation on the scene," Shen Mo frowned and looked around and said, "If someone came in through the ventilation window when Ruiyun was taking silk thread in this warehouse, and then jumped down to knock her out..."

"In this way, when that person opens the window, the light in the room will change. It is inevitable that some sound will be made, and Ruiyun will not notice it."

"And when Ruiyun made a scream at that time, the guy who came in would immediately reveal his whereabouts."

"Besides, the entrance of this window is so small. No matter how high a martial arts master is, he wants to hijack Ruiyun. He needs to go through this window with the unconscious Ruiyun and the others in order to pass through this window."

"This person has to push Ruiyun, who is unconscious, first before he can jump out of the window. But if he does this, he will not make any sound only if there is another person outside and Ruiyun."

"Of course, it has a second choice." Shen Mo continued, "It is him who went out first, and then he pulled Ruiyun's arm and pulled the unconscious woman out."

When Shen Mo said this, he shook his head with his lips and turned to look at Mo Xiaoluo beside him: "If you ask you to do this, will you feel very troublesome?"

When Mo Xiaoluo heard this, he nodded immediately.

Shen Mo said this, and he looked back at Yan Baiyu. Then he patted the window sash beside him and said, "But there is no leakage in the window paper on this window, and there are no scratches on it, which means..."

"Or it was Ruiyun's light skills, she opened the window herself and went out. Otherwise, Ruiyun could not be martial arts, but there was a person with high-quality light skills to cooperate with him. Only then did the two of them escape from the window silently."
Chapter completed!