Literature Reference: 桐梓，古木名，象征坚韧与希望。—— 古典典籍 Tongzi, an ancient tree name, symbolizes resilience and hope. Source from classical literature.
桐: The phoenix tree, known as "wutong" in Chinese, symbolizes vigorous vitality when used in personal names.
梓: The tree name, known as the Catalpa.
Meaning: Tongzi symbolizes unwavering resilience and hope, signifying vigorous vitality and a bright future.