Literature Reference: 荐豆奉觞亲玉几，配天合祖耀璿枢。—— 《郊庙歌辞 汉宗庙乐舞辞 观德舞》 作者：张昭 Offering beans and raising cups to the jade table, matching heaven and honoring ancestors, shining like the celestial pivot. Source from 'Ritual Songs of the Han Ancestral Temple: Dance of Observing Virtue' by Zhang Zhao.
璿: The ancient instrument for celestial observation; traditionally referred to as the first to fourth stars of the Big Dipper in ancient times.
枢: Pivotal and Central. It signifies elegance and versatility, the dual blessings of prosperity and fortune, a share of fame and wealth, and a flourishing success.
Meaning: Xuán shū symbolizes the celestial pivot, representing supreme authority and a central position.