A Brief Introduction to the Mystery Story of Black Gun in "Chasing the Murder by Firewire"

During 1930, a fire broke out in a residential building in Xujiahui, Shanghai, and the patrol room and the fire police arrived one after another. During the fire investigation, Miss Yu, a special forensic doctor in the patrol room, found a charred female body at the scene. The suspicious spots on the female corpse tell us that the victim didn't die in a fire, but was beaten alive and then set on fire. Not only that, I inferred from the clues on the spot that there was a kidnapping case behind the victim's murder. The victim is the wife of designer Xu Shengdao who came back from abroad, and the kidnapped one is Mr. Xu's daughter Dandan. Now that Mrs. Xu is dead, Dan Dan, the daughter of Xu Shengdao, is still alive and dead. When Zhong Lang, the inspector of the patrol room, took Yu and his assistant Han Fei around looking for Dandan's reinforcements, he met Ms. Tao, an investigator of Nanjing Military Commission, in the garden house of Xu Shengdao. From Ms. Tao's mouth, Zhong Lang learned that Xu Shengdao was related to the case of producing fake and inferior guns in Shanghai Longhua Arsenal.

It turned out that a batch of water renju rifles previously produced by Longhua Arsenal were exposed to quality defects after being equipped with combat troops in front. The Nanjing Military Commission is investigating the legal responsibility of Zhang Baiqun, the owner of Longhua Arsenal, but Zhang Baiqun blamed the design defect on Xu Shengdao, the designer of Shuilianzhu rifle. The Nanjing Military Commission secretly searched for Xu Shengdao, with the purpose of inviting Xu Shengdao to testify in court and bringing Zhang Baiqun, who made huge profits by producing fake and inferior guns, to justice.

After investigation, it was proved that Zhang Baiqun had evidence of profiteering by producing fake and inferior guns, but Xu Shengdao insisted on seeing his daughter Dandan before testifying in court. There is not much time to leave the court. The task before the patrol room is how to find the kidnapped Dandan. A golden snake ring found at the scene of the fire investigation reminds me of my father who was imprisoned for "treason". When the imprisoned father saw his visiting daughter, he told Yu Baiqun where he might hide Dandan.

All the patrol houses were dispatched, and Dandan was successfully rescued in a fierce battle. With the court session just around the corner, Xu Shengdao hesitated outside the court and refused to appear in court. Faced with Xu Shengdao's resolute attitude, Nanjing Military Commission was at a loss. Just as Zhang Baiqun left a contemptuous smile and walked to the court, the news that Dandan was successfully rescued came from the patrol room. Hearing the voice of his precious daughter on the phone, Xu Shengdao walked with firm steps to the court where Zhang Baiqun, a country thief, was tried.