Literature Reference: 庭前鹊遶相思树，井上莺歌争刺桐。—— 《杂曲歌辞 太和 第三》 Magpies circle the love-longing tree in the courtyard, while orioles vie in song among the coral trees. Source from 'Zaqu Geci Taihe III'.
思: Thought, intellect. In names, it often signifies quick thinking, sharp wit, and intelligence.
树: Trees and forests. Symbolizing great power and a solid foundation. As a personal name, it often signifies a person who is tall, imposing, reliable, responsible, and worthy of trust and reliance.
Meaning: Si Shu symbolizes enduring affection and steadfastness, like a tree firmly rooted and growing, representing lasting emotions and strong will.