For 28 years, police have searched for the perpetrator behind a series of murders that rocked Baiyin, Gansu Province, China. The case, known as the Baiyin Serial Murders, finally broke through through DNA investigations that led to Gao Chengyong.

In this true-crime documentary, Data and Facts takes you through the journey of the Baiyin Serial Murders: from the series of crimes that occurred between 1988 and 2002, through the years-long investigation, breakthroughs in DNA technology, to the arrest of Gao Chengyong in August 2016 and the court verdict in March 2018.

🔎 What made this case so difficult to solve for decades?
🧬 How did DNA evidence help narrow the search for the perpetrator?
⚖️ How did the legal process for the Baiyin Serial Murders end?

This video is structured as a true-crime documentary based on available news sources and case information. The discussion focuses on the chronology, investigation, evidence, and legal process, without any intention of exploiting the victims' suffering.

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