Li Xiuling, allegedly strangulated her neighbour's son and buried him at her garden in Haocun village because she was jealous of him being healthy while her own bedridden grandson suffered from muscular atrophy, a muscles degenerating disease, the county's procuratorate said.
A procurator said Li admitted that she lured the boy to her home and killed him, and later, she felt regretful about her actions.
The boy, identified as Wang Minghan, disappeared when he was playing near his doorstep on July 8. Only his slippers were found at the scene, state-run Xinhua news agency reported.