Literature Reference: Man means long; Yun refers to bamboo. Source from 'Shuowen Jiezi'.
曼:
Graceful and exquisitely beautiful. In names, it often signifies a person's physical attractiveness, poised demeanor, and elegant conduct.
筠: Graceful in demeanor, resolute and persevering.
Meaning: Like bamboo, graceful yet resilient, symbolizing elegance and strength.