The High Court on Tuesday sentenced a former university professor to seven years and four months in prison for the manslaughter of his wife in 2018 in a retrial.

Cheung Kie-chung, an associate professor of mechanical engineering at the University of Hong Kong, strangled his wife, Tina Chan, with an electric cable and transported her corpse in a wooden box to his office.

In 2020, he was found guilty of murder by a jury and received a life sentence. He appealed against the conviction.

Last year, his appeal was successful, resulting in the overturning of the conviction and a retrial.

During the retrial on Tuesday, Cheung pleaded guilty to manslaughter with the prosecution's agreement, citing "diminished responsibility" as the basis for his plea.

According to the Homicide Ordinance, a person who kills another person shall not be convicted of murder if they were suffering from a mental abnormality that substantially impaired their mental responsibility at the time of the act. If this is proven, the individual will instead be convicted of manslaughter.