Qi Yuan began to walk around the convenience store cautiously, waiting for a long time to look at every sign he thought was suspicious.

He even borrowed a tape measure from the trace inspector, carefully measured the footprints, and recorded the relevant data in a small book.

After a long time, while he was squatting on the ground, holding his pen to his chin while studying a footprint, he suddenly felt the light dim and a huge silhouette of a human figure appeared in front of his eyes.

He instinctively looked up and saw Su Ping standing in front of him. He immediately stood up and shouted: "Captain Su."

"Yeah." Su Ping responded, taking off his gloves and nodding: "Since you're not going back, well, come with me."

"Where to go?" Qi Yuan was stunned for a moment.

"Close the team." He said calmly: "It's very late, let's go."

Qi Yuan pursed his lips, somewhat reluctantly.

But Su Ping didn't care what he was thinking and left directly. He stayed there for a while, and when he came to his senses, he could only follow him quickly and ran out of the convenience store, watching his colleagues roll up the shutter door.

Close and affix a temporary seal.

Su Ping still ignored Qi Yuan, got into a car with the forensic doctor, and left directly.

"Xiao Qi!" Suddenly, Brother Song waved to him. He turned around, immediately showed a smile, and ran over.

"Xiao Qi, do you mind if I call you that?" Brother Song also smiled and said, "Let's go back in my car."

"Okay, thank you, Brother Song."

"Don't be so polite." He shook his head and got into the cab. Qi Yuan quickly got into the passenger seat and fastened his seat belt.

After driving for a while, Brother Song suddenly asked: "How do you feel when you appear on the scene for the first time?"

"I don't know," he thought for a while, then shook his head and answered truthfully: "To be honest, I'm still a little confused now."

"That's right," Brother Song nodded and said softly: "It's normal. Newcomers who appear on the scene for the first time can behave in all kinds of ways, including excited, nervous, and confused like you. Many of them are used to it.

Enough."

Qi Yuan pursed his lips and said nothing.

Brother Song asked again: "I saw that you were observing the scene for a long time. How about it? What did you find?"

When it came to business, Qi Yuan immediately became serious and replied seriously:

"The scene was very messy, but only a few of the goods on the ground were trampled, and although the shelves were overturned, there were not many signs of impact or other violent damage."

Brother Song hummed and motioned for him to continue.

He paused, thought for a while, and continued: "In addition, although the deceased's movements were exaggerated and his expression was distorted, he was still lying on the counter. Therefore, I believe that even if there was a struggle between the deceased and the murderer, it was not violent.

These signs of destruction should have been caused by the murderer.

Combined with the obvious signs of rummaging on several shelves near the counter, the murderer must be looking for something. So I think the murderer's motive may be to make money, and this case is suspected of robbery and homicide."

"Tucai?" Brother Song pursed his lips, shook his head and said, "No. Because the truly valuable items are not on the shelves, but in the glass counter at the cash register.

There are a large number of high-end cigarettes and lighters inside, and there is also a lot of red wine on the shelf at the back, but these are all placed neatly, and there is no sign that the cash register has been turned over. Obviously it cannot be for money."

"That's it..." Qi Yuan recalled what he saw and heard at the scene, and he felt somewhat clear.

Seeing that Brother Song didn't speak again, he continued: "In addition, there are a lot of blood footprints at the scene. I think this is a very high-quality and important clue."

"Oh?" Brother Song heard this and immediately encouraged: "Tell me about it."

"Yeah." Qi Yuan opened his notebook, took a look at it, and said:

"The first is the sole pattern, which is a wavy and folded pattern. This pattern has good anti-slip properties on dry land, but will not work when wet. At the same time, it has considerable aesthetics. It is suitable for daily use of cloth shoes, sports shoes, etc. for indoor and outdoor sports.

A pattern commonly used in footwear.

Looking at other features, the sole has a root on the heel and has a two-part design. The arch area is narrow and thin, and traces of the internal support beam structure can be seen. The sole pattern is relatively complex, with obvious side stalks. The trademark is slightly blurry, but it can still be determined that it is a shoe.

Nike shoes, and the position looks very standard. There are anti-wear patterns and heat transfer holes on the back and outside of the heel.

These characteristics indicate that the shoes worn by the murderer use rubber soles made by the molding process. It is speculated that they should be adhesive shoes, such as basketball shoes, volleyball shoes, etc. Combined with the wide forefoot, deep curved grooves, and shoe prints

Judging from the incomplete surroundings and other characteristics, it should be basketball shoes.

The degree of wear on the sole pattern shows that the killer has worn this pair of shoes for a long time, and even the anti-wear pattern has shown considerable wear.

Finally, judging from the shoe length and step distance, the murderer should be between 1.82 and 1.85 meters tall, which is quite tall in the south. It is speculated that the gait should be supported by the left foot. Finished. "

After reading, he raised his head and looked at Brother Song, wanting to hear his evaluation of his findings.

Soon, Brother Song nodded and said, "Yes, I have mastered the knowledge in the textbook quite well."

"Uh..." Qi Yuan scratched his head. Perhaps it was because Brother Song had a gentler temper and was very friendly. Qi Yuan was not so restrained in front of him. He directly said with a wry smile: "It's just that you have a good grasp of the textbook knowledge? The implication is that you still have a good grasp of the textbook knowledge.

Don’t you know how to adapt?”

Brother Song coughed twice and said with relief: "You don't have to be too ashamed. After all, you have never been to the scene before. If you can master what you need to master, even if you just write it down mechanically, you have passed.

As for the other things, just slowly accumulate experience. There is a gap between textbooks and practice, otherwise why would you have to do an internship for one year first, and then pass the police recruitment exam and then train for another year after graduation? Right."

Qi Yuan shook his head and did not defend himself. He only humbly asked for advice: "Brother Song, can you tell me where I went wrong?"

Brother Song thought for a while and did not answer directly. He just asked: "Have you taken photos of the scene?"

"Uh..." Qi Yuan did not answer directly, but asked with some confusion: "Can I still take pictures?"

"Of course, as long as you don't spread the word, you'll be fine, otherwise you'll be punished." Brother Song replied.

"Then..." He said guiltily, "Then I'll take the photo."

Brother Song's mouth twitched slightly, he coughed twice and said, "Then take a closer look."

Qi Yuan blinked: "Can you give me some tips?"

"Didn't I already give you the hint?"

"..." Qi Yuan had no choice but to hold his phone and stare at the photos he took to study them carefully.

After a long while, he asked uncertainly: "Gait?"

Brother Song didn't comment and just let him continue.

He organized his words before continuing: "Generally speaking, the footprints at the scene show that the toes of the shoes are relatively clear, while the heels are relatively light.
Chapter completed!