Literature Reference: 彤云密布，霓裳羽衣。—— 《长恨歌》 Crimson clouds densely cover the sky, while rainbow garments flutter like feathers. Source from 'Song of Everlasting Sorrow'.
彤: Red. It metaphorically refers to a woman's literary and scholarly pursuits, often implying her tranquility, gentleness, humility, good disposition, and talent.
霓:
The radiant arc of the rainbow, embodying a holistic understanding and a striking beauty.
Meaning: Tongni symbolizes the splendid clouds and rainbows, representing beauty and hope.