Su Jiayu is a young woman who is deeply in love with Lin Jiang. She has been waiting for him to propose marriage, but he has been hesitant due to his family's poverty. When a young man tried to harass her, claiming she was his fiancée, Lin Jiang came to her rescue. Su Jiayu angrily denied being anyone's fiancée and revealed that her parents never agreed to any marriage. She mustered her courage to ask Lin Jiang to come to her house to propose, giving him a deadline of one month or she would accept someone else's proposal. She is willing to endure hardships with Lin Jiang, even if it means eating chaff and vegetables. She is described as having a special warmth in her smiling eyes that brings comfort. After her emotional confrontation with Lin Jiang, she ran home crying and collapsed over her desk, carefully wiping her tears as if unable to bear the clean surface being stained.
