Liu Wangmin had this article in Bitter Winter. Here is an excerpt:

On April 9, 2021, human rights activist Guo Hongwei died while serving his jail sentence. His family does not believe that he died of natural causes.

Guo was born in 1963 in Siping City, Jilin Province, and worked as an employee at the Fusong Jianghe Power Plant in Jilin city. In 2003, he reported a Jilin businessman and his relative Xu Wengui, a prosecutor in Jilin, as being involved in a fraud of false hospitalization bills. His whistleblowing activities were not welcomed, and he was arrested and sentenced to five years in jail in 2005 for “embezzlement of funds,” a frequent charge against whistleblowers. He reported that he was repeatedly tortured in jail.

After he was released, he started campaigning against the use of torture in Chinese prisons, and went to Beijing with his mother Xiao Yunling to petition the Ministry of Justice and ask it to investigate and compensate him for his suffering. While in Beijing, both Guo and his mother were severely beaten by unknown thugs.

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