"Three stinkers, one Zhuge Liang. Ouyang, what do you think in your heart, you might as well say it, and let's analyze it together. Liu Dayu saw that Ouyang Ping must have his own thoughts, "Can I understand it this way, do you want to re-examine all the information we have?" ”

Ouyang Ping took out a simulated portrait from his leather bag.

The comrades' investigation revolved around this simulated portrait.

"Ouyang, this simulated portrait is made by a computer, there should be no problem." Liu Dayu said.

In 1994, with the continuous progress of science and technology, the means of criminal investigation have also undergone great changes, in the spring of 1994, DMA identification technology began to be applied to criminal investigation work (in 1993, this technology began to be used, after a year of preparation, the DMA laboratory of the Criminal Investigation Department of Jingnan Public Security Bureau was formally established); In the autumn of 1994, computer simulation portrait forming technology also began to be applied to criminal investigation work. Therefore, Ouyang Ping did not doubt the realism of the simulated portrait at all. It is precisely because of this basic understanding that Ouyang Ping puts the center and focus of his thinking on this simulated portrait.

The reaction of Mr. and Mrs. Zhao and Mr. and Mrs. Gan Dejun when they saw the simulated portrait further proved that the simulated portrait was not a problem.

"Ouyang, what can a few long hairs on the deceased's shirt tell us?" Liu Dayu remembered the long hair on the deceased's body.

Ouyang Ping has also thought about this question more than once, but he has never been able to think of a reason, he has made several assumptions: the first hypothesis is that the murderer is a woman, and the murderer left his hair on the deceased's body in the process of entanglement with the deceased; The second hypothesis is that there was a woman in the murderer's hands, and the woman left her long hair on the deceased's body in the process of being a helper; The third hypothesis is that the deceased had close contact with a woman before the murder, could the woman who had contact with the deceased be the murderer of the deceased? Ouyang Ping's thinking only stayed at this level.

"yes, I've been thinking about this a lot, this case is a very serious test for us, and my train of thought has never been so clogged as it is now. This case was busy enough for us for a while, but we didn't expect that we would get stuck in determining the identity of the deceased. Ouyang Ping poured a glass of wine into his mouth.

Liu Dayu and Chen Jie were very surprised, Ouyang Ping drank a glass without a little effort, in the past, he had to divide a glass of wine several times to drink it all.

Just because people who never drink alcohol – or who rarely drink – doesn't mean they can't drink. Ouyang Ping is just not good at drinking.

Ouyang Ping picked up the wine bottle again and poured himself a glass of wine.

"Ouyang, you drink slowly, take it easy."

"The people in Xie Juren Lane have not seen the deceased, and the two families of Zhangmen in the Chen family compound have not seen the deceased, only Mr. Zhao and his wife and Gan Dejun have seen the deceased. Teacher Zhao has retired, Aunt Zhao is a housewife, the couple usually stay in their own home, Na Gan Dejun and his wife make a living by opening a casino, and also stay at home, they have seen the deceased, does this mean that the deceased only appeared in the environment where Mr. Zhao and his wife and Gan Dejun lived in the environment, their living environment was only the two Zhao Gan families, the aisle between the front yard and Zhao Gan's two families. Ouyang Ping muttered to himself.

Liu Dayu and Chen Jie looked at Ouyang Ping's face intently, Ouyang Ping was obviously not talking drunk. Ouyang Ping was thinking--he was thinking deeply, so the two of them were silent and didn't interject, they were afraid of disrupting Ouyang Ping's train of thought.

"What does it mean that the deceased only appeared in the lives of Zhao Gan's two families? Let's talk about it. Ouyang Ping pulled the two of them into his thinking activities.

"The only explanation is that the deceased must have had a relationship with the Zhao Gan family." Chen Jie said.

"Since the deceased had a relationship with the Zhao and Gan families, why can't Mr. Zhao and his wife and Gan Dejun remember who they are? Especially Mr. Zhao and his wife, Mr. Zhao said that he had seen this person, and Aunt Zhao seemed to be more familiar with this person than Mr. Zhao. The tentacles of Ouyang Ping's thinking continued to extend to the depths.

"Teacher Zhao often runs out. He couldn't stay at home all day like his wife. Chen Jie said.

"That's right! Teacher Zhao often goes to the cultural center to sing Peking Opera," Ouyang Ping suddenly remembered, "On the evening of August 3, when we went to Zhao's house to investigate, Teacher Zhao came home very late, and Aunt Zhao said that he went to the cultural center every day. ”

Ouyang Ping said as he drew three circles in his notebook with a pen: a small circle, a large circle, and a middle circle between the small circle and the big circle. Ouyang Ping wrote the word "Zhao Gan" on the inside of the small circle, drew a circle the size of a button, and wrote a character in this small circle. "Zhao Gan" represents Mr. Zhao's family and Gan Dejun's family; The circle represents the well, and the person in the circle represents the deceased. Ouyang Ping wrote the words "Chen Family Courtyard" on the inside of the middle circle, and "Xie Juren Lane" on the inside of the big circle.

Liu Dayu was very interested in Ouyang Ping's sketch: "Ouyang Ping, tell us, what do you want to illustrate by drawing this sketch?" ”

"Except for the Chen family compound, no one in Xie Juren Lane has ever seen the deceased, and in the Chen family compound, the people of the Zhangmen family have not seen the deceased, and in the end, only Mr. Zhao and his wife and Gan Dejun and his wife have seen the deceased, which shows that the deceased must have appeared in such a specific environment as the Zhao and Gan families before they were killed-maybe more than once, and the well where the body was hidden was also in such a specific environment."

"Ouyang, do you want to say that the deceased is either related to the Zhao family or the Gan family?" Chen Jie seemed to have an understanding.