The woman drugged the man, her second husband, and tortured him for three days in June by withholding food and water and beating him, causing his death, said a report on government-backed news portal Anhui News.
She then dismembered the corpse with a saw and boiled the parts in a pressure cooker to hide the evidence, the report said. It did not detail how she disposed of the cooked flesh afterwards.
The psychological burden of the crime proved too much for her to bear, causing her to lose 14 pounds (6.3 kilogrammes) and turn herself into police, according to the report.