According to Chen Xuguang, He Jingang didn't drink much that night, he listened to He Jingang's words and looked for his brother at night, he didn't say what it was, after drinking, he and Wang Daqing went home separately, He Jingang has been living in the unit, but he lives in a dormitory alone, whether he lives in the dormitory he doesn't know very well, this point needs further investigation, through Chen Xuguang's investigation, he did live at home that night, his lover and children proved that he lived at home, His neighbors also saw him coming out of his house in the morning, indicating that he was not lying.

Judging from the current situation, the case is becoming more and more complicated, and during this period, a security section chief Chen Xuguang has emerged, does he have anything to do with this case, was he conscious or unconscious of drinking that night, was it a conspiracy or just a simple drink, He Jinqiang's case is very involved with He Jingang, but what is the motive for the killing? Is it really for He Jinqiang's savings? Who will be the woman who pretended to be Li Qiulan to pay money?

Zhu Chunhong's situation Zheng Wanjiang knew that there was a theft case involving her, and it was a case that he handled with his own hands, although he had a criminal record, the woman who could pay the money was not her, whether this had anything to do with her, and how did she and He Jingang get together.

There is also He Jinqiang's diary, from the analysis of the date, He Jinqiang has kept a diary for a long time, it is impossible to write blindly for a few days on a whim, but this diary is after May this year, so where is the previous diary? It is still a mystery whether it was consciously destroyed or hidden somewhere in the home and work.

If He Jingang had entered He Jinqiang's room, He Jingang would have known the specific situation of his brother, and he might have destroyed the diary, because it recorded some of his circumstances. This diary was carried by He Jinqiang, because he had a quarrel with his father that day, and he didn't go home because of his emotions, he stayed at Li Qiulan's house that night, so he put the bag in the dormitory of the unit, and He Jingang didn't find it, so he kept it and provided some clues for solving the case.

All indications show that this is a long-planned murder case, and that it is by no means one or two people who participated in this case, but a group organization, and this can be seen from the threatening letter to He Jiaqi, and we can prove this as it is said in the letter.

They are extremely ferocious and brutal, and have a certain degree of anti-investigation ability and rich experience in committing crimes. As can be seen from the He Jinqiang case, this was an organized and premeditated homicide case. The series of actions from the first scene of the destruction of the corpse to the transportation of the corpse shows that he has a huge organizational structure, and its inside story is extremely complicated, and it is necessary to immediately control He Jingang and Zhu Chunhong and monitor their every move, so as not to cause unexpected problems and further complicate the case. However, we must not let them arouse the slightest suspicion and prevent them from taking risks, which will put the work of solving the case in a greater predicament.

Zheng Wanjiang analyzed: Judging from the current situation, this is a gang crime, you think about it, it takes a person to drive a car, in addition, we look at He Jinqiang's body, there is no sign of resistance before death, and the person who drinks with him must be someone he is very familiar with, He Jinqiang will never speak behind his back, if the murderer kills him from the front, he is a young man in his twenties and his body is strong, it is impossible to be tied up without a little ability to resist, on the contrary, ordinary people can't kill him, Then it was when he was unsuspecting that someone suddenly attacked him from behind and killed him. Drinking with him must have been more than two people.