Cui Min, the eldest daughter in a family influenced by a son-preference mentality, cared for her vegetative mother for three years and even donated a kidney to her. Despite her sacrifices, her mother favored her unfilial younger brother Cui Guodong, leaving all family assets to him. Heartbroken, Cui Min left home. After her departure, the mother was abandoned by Cui Guodong and finally recognized her daughter's true devotion – but tragically, the realization came too late.