I am glad that you asked about this. Anticommunists like sharing these photographs without giving any context.
I don’t speak Chinese, but judging from this (crudely translated) article, Luc Kim Phung (sometimes translated as Liu Jinfeng) suffered the death penalty for committing mariticide. Her husband was very abusive and infanticidal. ‘At the police station, Luc Kim Phung admitted all of [her] actions. In March 1995, Luc Kim Phung was sentenced to death, although the court considered all relevant circumstances, […] because she had a criminal record, there could be no other sentence.’