Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

According to Zhang Laibin's confession, the hardware store where he bought the knife was located in a small town south of Lijia'ao Village, and the shoe store was also located in the same small town. The place where he threw away Li Yongbao's ID card and mobile phone was in the center of an open space south of Lucao Gou Village, which was near where drag marks were found during the on-site investigation.

Lu Chuan immediately arranged for his team members to go to the hardware store and shoe store that Zhang Laibin had mentioned to verify the relevant information and collect relevant evidence of Zhang Laibin's purchase of knives and shoes, such as the store's surveillance video and the owner's testimony. At the same time, he arranged for his team members to go to the open space south of Lucao Gou Village to look for Li Yongbao's ID card and mobile phone to further improve the chain of evidence.

The interrogation continued until approximately 2 PM that afternoon. Zhang Laibin confessed to murdering Li Yongbao and provided a detailed account of the entire crime, signing the interrogation record. Meanwhile, the laboratory returned the final test results: the bloodstains on the knife found in Zhang Laibin's home were confirmed to be those of the deceased, Li Yongbao; Zhang Laibin's DNA perfectly matched the DNA found in saliva residue on a cigarette butt collected at the scene; Zhang Laibin's fingerprints perfectly matched the suspicious fingerprints collected at the scene; the metal buttons found in Zhang Laibin's home were identical in style and material to those collected at the scene; the sneakers found in Zhang Laibin's home perfectly matched the suspect's shoe prints found at the scene; and the suspicious man captured on the convenience store's surveillance footage was confirmed as Zhang Laibin through technical comparison.

In addition, the team members who went to the hardware store and shoe store in the town to verify the situation also brought back news: the owners of the hardware store and the shoe store confirmed that Zhang Laibin had purchased a single-edged carbon steel knife and a pair of size 43 diamond-patterned rubber-soled sneakers from their stores a week before the incident. The store's surveillance video also clearly recorded the entire process of Zhang Laibin purchasing the knife and shoes, which was completely consistent with Zhang Laibin's account.

The team members who went to the open space south of Lucao Gou Village to look for Li Yongbao's ID card and mobile phone also successfully found Li Yongbao's ID card and mobile phone. The information on the ID card was completely consistent with the deceased's identity information. The mobile phone was damaged and could not be turned on, but after technical repair, it was confirmed that the mobile phone was indeed Li Yongbao's mobile phone, which was completely consistent with the information given by Zhang Laibin.

Thus, the intentional homicide case in Lucao Gou Village was successfully solved. The suspect, Zhang Laibin, confessed to his crime without reservation. All the evidence formed a complete chain of evidence, which was sufficient to prove that Zhang Laibin was the murderer of Li Yongbao.

When Wang Shuai told Liu Mei that the case had been solved, Liu Mei broke down in tears again. This time, her tears contained sorrow, relief, and a trace of guilt. She knew that Zhang Laibin's tragedy, Li Yongbao's tragedy, and her own tragedy were all because of her, because of those rumors, because of a moment of impulsiveness and obsession. If she had firmly rejected Zhang Laibin back then, if she had communicated properly with Li Yongbao, if she had reported Zhang Laibin's threats to the police in time, perhaps none of this would have happened. Li Yongbao wouldn't have died in vain, Zhang Laibin wouldn't have turned to crime, and neither family would have been destroyed.

Zhang Laibin, the suspect, has been criminally detained by the Municipal Criminal Investigation Detachment on suspicion of intentional homicide. He will subsequently be transferred to the procuratorate for review and prosecution according to legal procedures, and will face severe legal punishment. The vacant farmhouses in Lucao Gou Village, the land once stained with blood, will slowly return to peace. But this tragedy leaves behind endless reflection and a stark warning—impulse is a devil, obsession is an abyss. A moment of resentment and impulsiveness can ruin not only one's own life but also the lives of others, destroying countless happy families. As human beings, we must be dutiful, reasonable, and respectful, cherish the happiness before us, stay away from gossip, and reject impulsiveness and obsession. Only in this way can we avoid tragedies and safeguard our own happiness and peace.

After the case was solved, Lu Chuan, Wang Shuai, and all the investigators, technicians, and forensic personnel involved in the investigation breathed a sigh of relief. For several days and nights, they worked tirelessly, undeterred by hardship or fatigue, meticulously and wholeheartedly, overcoming one obstacle after another and uncovering one clue after another with their professional skills and unwavering belief. Finally, they identified the suspect, solved the case, brought justice to the deceased Li Yongbao, and safeguarded the peace and justice of the jurisdiction.

Although the case has been solved, the investigators have not relaxed their efforts in the slightest. They continue to work diligently, organizing case materials, perfecting the chain of evidence, and handling the follow-up work. They know that as criminal investigators, safeguarding the peace and justice of their jurisdiction is their mission and responsibility. No matter how complex the case, no matter how great the difficulties, they will remain steadfast in their posts, go all out, and use their expertise and dedication to combat crime, protect peace, and restore justice and tranquility to the people.

Less than a week after the investigation of Zhang Laibin's case, the Criminal Investigation Detachment received another report that a body had been found in Qinjiagou.

The entire process of on-site investigation and village survey in the Qinjiagou farmland corpse dumping case

On a crisp early autumn morning, as dawn broke and a thin mist still lingered over the fields of Qinjiagou, the air was filled with the dampness of the soil and the sweet scent of ripening crops. Qinjiagou was a remote village nestled among mountains, with fewer than fifty households. Most villagers made their living by farming, working from sunrise to sunset, living a quiet life with little outside contact and no earth-shattering events ever occurring. But on this day, this tranquility was shattered by a panicked cry for help, shattering the peace of Qinjiagou and instantly plunging this unassuming village into an atmosphere of tension and fear.

Qin Xueli, 58 years old this year, is a native farmer of Qinjiagou. He has spent his entire life working the land, and is known for his honesty, integrity, and simple nature. He is a man of few words, and every day before dawn, he would shoulder his farm tools and head to his fields to work. This morning, as usual, Qin Xueli carried a hoe and a small shovel, arriving early at his farmland located at the east end of the village. This farmland was his "old land," cultivated for decades. The soil was fertile, and he usually grew corn and wheat. The corn had just been harvested, and corn stalks and roots remained in the field. Qin Xueli planned to take advantage of the sunny weather to remove the stalks and till the soil again, preparing for planting winter wheat. (End of Chapter)