Literature Reference: A quiet maiden, fair and graceful, waits for me at the corner of the city wall. Source from 'The Book of Songs·Bei Feng·Jing Nü'.
姝: Beauty and grace. A fair lady, embodying the elegance of blooming flowers and the virtues of wisdom, kindness, and propriety.
函: The term refers to a letter and its envelope.
Meaning: Shu signifies beauty and elegance, while Han represents inclusiveness and subtlety, embodying a serene and graceful woman with refined temperament.