Tianjin Mysteries Affair is the fourth movie of the saga "Tianjin Mysteries". Produced for CCTV6, this saga tells the story of investigations in the Police station of Tianjin city (China) in the fifties. In this movie, the police team arrest three drug traffickers. Among them, the well known "Big Scar" who escape from prison and is purchased by the team. Over the lead of secretary Wilson (Head of the police), the investigation is managed by Liuzhiyuan and her detectives Zhao Kuiyong, Xao Magan and Wang Pangzi.

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