Literature Reference: 白龙改常服，偶被豫且制。—— 《杂曲歌辞 枯鱼过河泣》 The white dragon changed its usual attire and was unexpectedly subdued by Yu Qie. Source from 'Zaqu Geci: Ku Yu Guo He Qi'.
豫: Joy, happiness.
且: Moreover, it is essential to maintain order and organization in all endeavors, which not only ensures efficiency but also brings a sense of aesthetic pleasure and satisfaction.
Meaning: Yu Qie implies steadiness and prudence, symbolizing a firm will and composed demeanor.