The protagonist, a concubine-born daughter of the Song family, also known as Third Sister. She is extraordinarily beautiful with dark hair, snowy skin, peach blossom eyes, and a small red mole at the corner of her brow. She was sent away to Puhua Mountain five years ago after accidentally eating crab roe and breaking out in red rashes that were mistaken for smallpox. She chose to enter the Zhenbei Marquisate as a concubine to bear a child for her elder sister Song Shuhua, rather than marry her legal mother's nephew. She is cold, observant, and calculating beneath a submissive exterior. Her personal maid is Yin Huan.
