One day in the autumn of 1951, villagers in the western suburbs of Kunming City accidentally found a female corpse when they passed by the culvert under the bridge, and immediately reported the situation to **. At that time, Cao Xianzheng, director of the third branch of the Kunming Public Security Bureau, was about to enjoy noodles, and after receiving the ** from the police, he immediately responded: "The western suburbs culvert occurred."
After speaking, he finished eating noodles in a few gulps and led several public security policemen to quickly rush to the scene.
At the scene of the crime, a female corpse was lying in a ditch, her face was clearly visible, and she was about 30 years old. According to preliminary judgment, the woman was suspected of being raped and killed and abandoned here.
After careful observation, Cao Xianzheng found that the pinch marks on the deceased's neck were relatively light and not fatal. He also noticed a strange substance coming out of the deceased's mouth and immediately instructed ** to collect a sample for testing.
Laboratory tests confirmed that the deceased had ingested the highly toxic cyanide before his death, and that it was this poison that caused his death. Cao Xianzheng's analysis believes that after using cyanide to poison the woman, he may deliberately create the illusion of murder, so as to make his killing methods more confusing and increase the difficulty of solving the case.
He realized that the opponent in this case should not be underestimated, and the investigation will face many challenges.
Cao Xianzheng, a veteran full of stories. He was born in 1916 into a poor peasant family in Qinyuan County, Shanxi Province. As a child, herding sheep for his employer, he was given a musket and began to practice marksmanship.
In 1937, he joined the Eighth Route Army, experienced the smoke of gunfire, and gradually grew into the commander of the special service company.
Cao Xianzheng was the captain of the Qinyuan County guerrilla force during the War of Resistance Against Japanese Aggression, and with his keen insight and calm judgment, he deduced the height, posture and walking style of a traitor who reported to the Japanese army and killed the masses with a footprint.
In another incident, he found the footprint again, tracked it down and set up an ambush, successfully caught the traitor, and executed him in a public trial. His talent for solving cases spread immediately.
In 1951, he was transferred to the director of the Third Branch of the Kunming Public Security Bureau, and his solid work style and careful investigation of the case made him pay attention to every detail when dealing with this murder case.
He directed the police to investigate the identity of the deceased, but could not be identified as no items were found. The police went to the surrounding villages to inquire but no one identified the deceased. He judged that the deceased might have come from another place and arranged for the police to conduct an investigation in a nearby hotel.
After investigation, the police found the registration information of the deceased He Yumei in a remote hotel. Her family lives in Fumin County, a suburb of Kunming, and this trip is to go to the northeast to reunite with her husband.
After questioning the hotel attendants, they did not find out that she had been in any dealings with anyone, and that she had left the hotel with her luggage. Although no further useful clues were found in the hotel, the police continued to search for other clues.
Through further examination of the body, the police found that the deceased had residual burnt bait in her stomach, so it was speculated that she was poisoned and died after eating the burnt bait containing cyanide.
Cao Xianzheng and the police then found a nearby stall and asked the vendor if anyone had ever bought it. The vendor replied that two women had bought the bait.
In the process of investigating He Yumei's disappearance, Cao Xianzheng found a key clue. He inquired about a vendor and learned that a woman who was with He Yumei had bought a piece of burnt bait, and He Yumei had not bought it.
This alerted him, and he felt that there was something wrong with the woman, so he suggested that ** investigate the hotel again. Cao Xianzheng questioned the waiter of the hotel in detail and found that He Yumei had lived with a woman named Zhang Lianying.
They didn't know each other, but after only one day, the waiter noticed that they were talking and laughing together, like sisters. The innkeeper and waiter both thought that Zhang Lianying and He Yumei had similarities, but did not think that Zhang Lianying would kill He Yumei.
However, when ** investigated Zhang Lianying's residence registration, it was found that all her information was fake. Cao Xianzheng began to fall into deep thought, and he began to wonder if Zhang Lianying was **.
Zhang Lianying and He Yumei look similar, does this mean that Zhang Lianying used He Yumei's identity to kill people, and then faked the scene to mislead investigators? Zhang Lianying's identity is all fake, does she intentionally want to escape unnoticed?
Cao Xianzheng searched for answers in his thinking, trying to reveal the truth of this complex case.
Cao Xianzheng realized that this case was not simple, and he decided to look for clues from He Yumei's husband. He ordered the investigators to send a telegram to Li Xin, informing him that He Yumei had died.
Li Xin replied that He Yumei had gone to the northeast to meet him, which made Cao Xianzheng start to suspect that someone was impersonating He Yumei. He asked Li Xin to stabilize the woman first, and then sent investigators to Shenyang to confirm her identity.
After arriving in Shenyang, the investigators and Li Xin asked their "wife" to take pictures, and then sent ** back to the police in Kunming for identification. It was confirmed that this woman was Zhang Lianying.
With the cooperation of the local public security organs, the police quickly arrested Zhang Lianying and then escorted her back to Kunming for interrogation. During the interrogation, Zhang Lianying confessed that she had killed He Yumei.
She was jealous of He Yumei because she looked like He Yumei, but He Yumei's fate was better than her. He Yumei wants to go to the Northeast to reunite with her husband and end the life of separation between the two places, which makes Zhang Lianying feel jealous.
When she heard that He Yumei and her husband had separated shortly after their marriage and had not seen each other for eight years, Zhang Lianying decided to replace her. Zhang Lianying explained the process of committing the crime, she stuffed cyanide into the burning bait, and then handed it to He Yumei to eat.
He Yumei was defenseless, took the burnt bait and ate it, and soon fell to the poison. Zhang Lianying dragged the body under the culvert, and after faking the scene, she took He Yumei's luggage and went straight to the station.
Although Zhang Lianying's confession sounded seamless, Cao Xianzheng still felt doubtful, and he decided to interrogate Zhang Lianying himself.
In the early days of Yunnan's liberation, some Kuomintang spies and bandits were still lurking in Yunnan to carry out sabotage activities. Faced with this situation, the Yunnan public security organs launched an investigation and crackdown on the spies.
Cao Xianzheng sat at the table, flipping through the seized spy files, chatting with Zhang Lianying. He began to ask questions slowly, but Zhang Lianying's answers were sometimes inconsistent.
Cao Xianzheng, with his wit and experience, seized on Zhang Lianying's contradictions to refute and advised her to confess and be lenient. In the end, Cao Xianzheng successfully broke through Zhang Lianying's psychological defense through detailed interrogation, and she finally admitted her identity - the former lieutenant agent of the Yunnan Garrison Command of the Jiang Army, and confessed her sabotage activities to **.
After the liberation of Yunnan, she was instructed by her superiors to stay in hiding for a long time and engage in sabotage activities. However, because of the intensity of Yunnan's crackdown on spies, she began to look around for opportunities to lurk in other places.
During the training of the female spy of the military commander, Zhang Lianying learned about He Yumei's situation, so she decided to use He Yumei's name to lurk in the northeast. According to the clues provided by Zhang Lianying, Cao Xianzheng successfully captured more than 300 hidden Kuomintang spies, and did everything he could to eliminate evil for the people, and was praised by people as "Cao Qingtian" and China's Sherlock Holmes.
In 2013, CCTV filmed the documentary "Detective Cao Xianzheng", which told his legendary story of solving the case. We encourage in-depth study of the history of the war, actively spread positive energy, welcome contributions, private messages will be replied in a timely manner.