Literature Reference: 沐：濯发也。——《说文》；筠：松筠之节。——《礼记》 Mu: To wash the hair. Source from 'Shuowen'; Yun: The integrity of pine and bamboo. Source from 'Liji'.
沐: The character signifies "moisture" or "to be moistened," and is considered an auspicious and highly favorable word.
筠: Graceful in demeanor, resolute and persevering.
Meaning: Mu signifies cleansing and nourishment, symbolizing freshness and purity; Yun refers to the green skin of bamboo, representing resilience and nobility.