The eldest member of the Duanmu household, known as "Grandma" or "Great-grandmother," joined the family at sixteen roughly a century ago. She has observed five generations of Yangming Masters rise within the lineage. Though not the formal family head, she wields substantial authority, stepping in to mediate critical disputes or address grievances against the current head to maintain household unity.

Some relatives view her as cold or ruthless due to her acceptance of sacrificial deaths involving her husband, children, and kin. This stems from her unwavering dedication to a "higher cause" that justifies such losses. Her choices consistently prioritize this cause, and she would never deliberately harm her family for personal gain or external motives.