Qin Sang is the eldest daughter of the former wealthy Qin family. After her parents were accused of murder and committed suicide, she was left to support her younger brother An Jie, who suffers from a serious illness requiring expensive surgery. Forced to drop out of her privileged life, she works as a secretary at a company and secretly takes part-time jobs as a KTV waitress to pay the bills. She is beautiful, with long legs and an alluring figure, but maintains a calm and indifferent exterior. Despite being humiliated by her ex-boyfriend Chu Mobai and others from her past circle, she never begs or shows weakness. She fights to protect her brother and clear her parents' name, enduring hardship with resilience. Her relationship with Chu Mobai is complicated; she broke up with him four years ago for unknown reasons, and now he repeatedly mocks and tests her. She accepts his financial offers when needed but keeps emotional distance. She is sharp-tongued and capable of handling confrontations without losing composure, as seen when she slapped a gossiping woman in the dressing room and when she forced Li Moxie to pay for drinks. Her ultimate goal is to secure 2 million yuan for An Jie's operation.