If the woman had drowned after coming to the scene with the man, there was a possibility that she would have been pushed into the river by the other party. Several abrasions on her hands and feet could be presumed to have been the result of resistance. It is a perception that the handbag was snatched away, but it should be a more natural perception to take it away in order not to reveal the identity of the woman. In this way, the sexual intercourse she had during her life may not have been willing, but the man's violent success.

The man and the woman came to the scene before 7 p.m. to make small talk. Later, the man demanded peace with the woman. At this time, because the woman refused, the man used violence to succeed. When the incident was over, the woman yelled at the man. As a result, the man, in a fit of rage, pushed the woman into the river—and this speculation was made.

On the 26th, the woman's identity was finally ascertained. After reading the media report, the owner of a bar called Starry Sky in Nanshan City reported to the police that the woman who had died was similar to He Shan, a waitress who worked at their store. He Shan had called the store on Saturday evening to say she was asking for leave. The owner of the bar looked at the body and confirmed that it was He Shan.

He Shan lives alone in an apartment in Nanshan City. She is 23 years old. According to the apartment manager, she came out of the apartment at around 4:30 p.m. on this day. When she went out, she didn't say where she was going, and certainly didn't say what man she was going to date. However, now that she is known to be a waitress, the scope of the investigation can be narrowed down a lot. The criminal police immediately investigated He Shan's regular customers at the "Starry Sky" bar. He Shan does not have a specific lover, and for the sake of money, it can be said that there are many lovers. In this way, it is not difficult to speculate why she went to Momiji Valley on Saturday evening. Isn't she traveling for the purpose of picking up customers? As a result of this speculation, her sex-love before her death should not have been raped, but out of willingness. However, the dispute that arose later was likely to have something to do with money. In other words, the amount of money she asked for was too outrageous, and the other party was furious and quarreled, and the murder could happen because of this. It was later reported to the police that he had heard a woman's voice from the scene at around 7 p.m. on the day of the accident. As a result, the suspicion of homicide has become stronger.

According to the personnel of the "Starry Sky" bar, the handbag he was holding was a black bargain, and the money in it never exceeded one or two hundred yuan. Usually all the money she earns is deposited in the bank, and the pocket money she carries with her is extremely limited - this is her style. If this is true, the robbery is self-defeating. She often wears a silver necklace around her neck. The apartment manager used to see this thing when he went out that day.

The pendant of this Italian necklace is oval with a relief of the goddess Venus and a small picture frame, a gift from a drinker. What she packed inside was not a lover's photo, but a photo of her deceased mother. Now even this necklace is gone, so it can be seen that it was snatched by the other party. It is an extremely thin silver necklace that breaks if you pull it casually.

There doesn't seem to be any suspicious person among He Shan's regular customers. Because this is a small bar, the number of regular customers is extremely limited. The results of the investigation knew that these people had exact alibi certificates that day. But He Shan, who is bent on making money, has sexual relations with all customers, so her targets are not necessarily limited to regular customers. Some of the drinkers who only came once or twice didn't even know their names, so of course they couldn't look it up.

A few days later, the detectives shifted the focus of their investigation to the vicinity of the scene. In this way, Ren Ping became the object of suspicion.

Ren Ping is 32 years old. He was a handyman at an inn called "Spring and Autumn Villa" in Momiji Valley. I do errands like boiling bathwater, sweeping the yard, and running errands. He has been working at this hotel for two years, and he is a bachelor, and his food and lodging are provided by the boss.

Ren Ping paid attention to the investigators because at 7:28 p.m. on the 24th, a person walking back from the west of the street was seen by the neighbor aunt of the "Spring and Autumn Villa". The aunt was waiting for a guest who was about to arrive from Nanshan City, and accidentally saw Ren Ping when she looked at her watch frequently, so she was absolutely sure of this time. She said that she had said hello to Ren Ping at that time, but Ren Ping pretended not to hear it and hurriedly walked into the "Spring and Autumn Villa". How did this man who has always liked to joke become like this? The neighbor's aunt said she was still wondering about it at the time.

According to the results of the investigation of the "Spring and Autumn Villa", it is known that Ren Ping went to the store in front of the station to buy snacks at about 6:10 pm on the 24th. At that time, the hotel bicycle happened to be ridden by someone else, so he muttered unhappily and walked out. From the "Spring and Autumn Villa" to the front of the station, you must walk about one kilometer to the west, where the road is being built, and then bend north and walk about one kilometer of the ramp. At a normal walking pace, it takes about half an hour to walk to the store. In fact, he walked out of the store around 6:45 a.m. after he had finished buying the goods. It takes about 5 minutes to buy a product.

It takes at least 23 minutes to get from the shop to the place where Kasugi drowned or where the grass was trampled. This distance is about 1.8 km. The winding trail is narrow. It takes at least 25 minutes to walk back to the "Spring and Autumn Villa" from this site. This distance is also about 1.8 km.

Therefore, it takes about an hour to walk back and forth from "Spring and Autumn Resort" to the shop in front of the station. In other words, it takes half an hour to go back and forth, and 5 minutes to buy food, for a total of 65 minutes.

However, Ren Ping set off from the "Spring and Autumn Villa" at 6:10 and did not return until 7:28, during which he spent about 78 minutes. Based on this, he took 13 minutes more than the average person. 13 minutes can make a person do a lot of things - that's what some detectives think.

As a result, Ren Ping received the attention of the police. However, on these grounds alone, he could not be arrested. After an in-depth investigation, the investigators obtained promising circumstantial evidence. They got the cigarette butts that Ren Ping had smoked and sent them to the Technical Appraisal Department for testing, and the results determined that Ren Ping's blood type was AB. In other words, this is the same type as semen taken from Heshan's body.

Investigators brought Ren Ping to the police station. Ren Ping's reply at this time was as follows: A guest asked him to buy snacks, and he took the 50 yuan handed over by the guest and walked out of the "Spring and Autumn Villa" at about 6:10 p.m. When he received this kind of errand, he usually rode a bicycle, but at this time, the bicycle happened to be ridden by someone else, so he had to go on foot.

At this time, he was quite tired from his day's work, and his heart was heavy at the thought of having to walk two kilometers round trip, so he slowly moved in the direction of the station. When he came to the north corner, he met an acquaintance in the village. The two briefly exchanged pleasantries with each other at that time.

Later, as he was walking on the road to the station, he met a waitress from another hotel he knew. He also exchanged a few words with her. On the way back from buying snacks, he frequently browsed the shop windows.

Because of this, it usually takes only 60 minutes to go back and forth, but it took him about 80 minutes.

The criminal police asked the villager mentioned by Ren Ping and the waitress of a hotel to question, and as a result, the accounts of the two were completely consistent with what Ren Ping said.

The first villager said that the time of the encounter was about 6:25, and the waitress of a hotel said that she met Ren Ping before 6:40. Ren Ping's walking speed was confirmed by the testimony of the two men.