Sheriff Uncle, open the door quickly! I've come to solve a case!

Bai Zhizhi wandered around the room aimlessly.

As the water mist in the air slowly dissipated, Bai Zhizhi felt very uncomfortable in her nose, as it was affecting her breathing. When the water mist cleared, she switched to breathing through her mouth.

Its tiny mouth opens wide, always making a "whoosh" sound.

Aren't the water in the river and the bathtub? There's no water in my uncle's room.

Song Qiu was worried about Bai Zhizhi, afraid she would disturb the corpse: "Hey, don't touch anything in the room, you hear me?"

Bai Zhizhi pouted unhappily: "Zhizhi isn't called 'Hey'! Zhizhi is called 'Zhizhi'."

Song Qiu couldn't help but laugh after hearing her finish the tongue twister.

Bai Zhizhi also chuckled foolishly along with him.

Bai Zhizhi continued circling the room until she finally noticed something was wrong.

The layout of this room is so strange.

The mirror on the computer desk faces the bed, the dressing mirror faces the window, and the full-length mirror is placed on the east side, etc.

"It's really unlucky to put it like this," Bai Zhizhi muttered to herself.

An adult walked up to her.

Yu Bei, hands in his pockets, spoke casually, "What did you find?"

Bai Zhizhi pointed her little finger at the mirror on the computer desk: "Brother Beibei, the placement of these mirrors is so unlucky~"

"Mirrors are objects that reflect the yin, so they shouldn't face the bed, the main entrance, or the toilet, but this brother is facing all of them!"

"Yes, you're right, this is indeed very strange." Yu Bei had actually noticed it a long time ago. As a folk Taoist priest, he was subconsciously sensitive to these things, and he noticed something was wrong as soon as he entered the house.

However, he didn't rush to say anything, wanting to see when Bai Zhizhi, whom Qin Qingzhou relied on, would discover this.

It seems that Bai Zhizhi is even more formidable than we imagined.

"In addition, the number of these mirrors is also quite strange."

Like Teacher Bai Zhizhi, Yu Bei led her around the house.

In Bai Zhizhi's eyes, Yu Bei was indeed a high-level Taoist priest, and she couldn't wait to learn more and become as strong as her brother so that she could protect her uncle.

"There are eight mirrors in the house, including the bathroom mirror. Odd numbers are yang and even numbers are yin. This house has a lot of yin energy. Wang Yichen is weak and easily affected by yin energy. If their family is very superstitious, there would definitely be more than eight mirrors."

"So, if their family originally bought an odd number of mirrors, Bai Zhizhi, which mirror do you think was redundant?"

When Teacher Yu Bei suddenly asked a question, Bai Zhizhi, who was lost in thought, was startled and immediately bit her fingertip: "Uh... Zhizhi doesn't know."

Bai Zhizhi felt that both were useful, and that she could look beautiful in the mirror.

Yu Bei gently patted Bai Zhizhi's head: "Your Taoist magic is very strong, but you still need to grow up and learn more about life."

He walked to a full-length mirror against the wall: "This mirror is most likely unnecessary."

"For Senyao~"

"Because full-length mirrors in a room are usually used for grooming, but mirrors for grooming are usually at the exit. And as you can see, there is already a full-length mirror at the exit. The purposes of these two mirrors conflict."

"The person who bought this mirror is most likely the murderer."

Bai Zhizhi suddenly realized, "Brother is so amazing!"

"What's so impressive about that? It's just speculation, isn't it?" Qin Qingzhou entered the room with a dark face, clearly jealous of Bai Zhizhi's praise of others.

Yu Bei chuckled: "This is a reasonable deduction. In essence, it's the same as your police work—making reasonable inferences about all clues."

"We only talk about evidence, not subjective opinions." Qin Qingzhou spread his hands: "Now I want to see the evidence. Hand over what you just asked me."

Yu Bei understood and copied all the data he had just transferred onto a USB drive, letting Qin Qingzhou check it on her laptop.

The furniture purchase record was also included as a bonus.

Qin Qingzhou sat to one side checking the surveillance footage, while Yu Bei went out and asked the housekeeper for a large pile of needles and thread.

Seeing Yu Bei return with a large pile of knitting yarn, Bai Zhizhi curiously went over to take a look.

"Brother, do you want to knit a sweater?"

"The teachers at Zhizhi Kindergarten played with the children, and Zhizhi can knit!"

Yu Bei handed a spool of thread to Bai Zhizhi: "Then you help me."

"Yay! Yay!"

Qin Qingzhou also reviewed all the surveillance footage and the list at this time, and found no problems.

I turned around and saw them fiddling with yarn: "What are you doing?"

"This confirms my conviction."

Yu Bei used adhesive tape to stick the yarn end to the frame of the full-length mirror, then had Bai Zhizhi pull it straight back to the end, cut off the yarn, and stick it to the wall.

A mirror has two lines running across its left and right edges, traversing the room.

The same applies to the remaining mirrors; soon the room was filled with different lines.

When she finished looking in the last mirror, Qin Qingzhou's expression finally tightened.

All the mirrors converged, and the final point where they met was the very spot where Wang Yichen died!

"He was killed by the mirror," Yu Bei concluded.

In the past, Qin Qingzhou would have definitely retorted, "How is it possible for someone to be killed by a mirror?"

But now, with Bai Zhizhi and Yu Bei by his side, he has no choice but to believe in such unscientific things.

"How did Mirror kill him?" Qin Qingzhou asked.

"I know," Bai Zhizhi replied in a childish voice.

"The elders taught me that mirrors can be connected to form a formation. All you need is an identical mirror to project the image from another location here."

Qin Qingzhou understood what they meant: "In other words, the murderer doesn't need to come to this room. He only needs to be in another room and use some methods to project himself here. As long as Wang Yichen stands at this intersection, he will be killed."

"Outrageous..." he muttered.

"I've found the method of murder, so the question of who the killer is should be handed over to you, Officer Qin."

Qin Qingzhou looked at the room, which was in a terrible state, closed her eyes, and sighed.

"If the alibi is invalid, then we'll have to start from scratch, which will take some time." Qin Qingzhou lowered his eyes and fell into thought.

Since Wang Yichen did not participate in the competition for family property and his parents had abandoned him, his elder brother's intention to kill him was very small.

His younger brother, Wang Yiwen, didn't interact with him much. He wasn't particularly close to or dislike him, nor did he harbor any strong murderous intent.

Upon careful consideration, none of the individuals' murderous intent was sufficient to constitute murder.

The only point of doubt.

Wang Yichen was about to graduate abroad and could have received his diploma before returning. What happened that made him rush back to China without even getting his diploma?

Qin Qingzhou suddenly asked Yu Bei, "When you took on this case, did the butler mention anything else?"

"I've said everything I needed to say."

Qin Qingzhou took out her phone to send a message to her colleagues in the information department: "Something was strange when we were questioning the suspect just now."

"The housekeeper's son seemed to be very close to Wang Yichen, but he never mentioned it from beginning to end."