Literature Reference: The phoenix sings, on that high ridge. The phoenix tree grows, facing the morning sun. Source from 'Shijing·Daya·Juan A'.
于: Thus, it is.
桐: The phoenix tree, known as "wutong" in Chinese, symbolizes vigorous vitality when used in personal names.
Meaning: The phoenix tree symbolizes nobility and resilience, while also signifying auspiciousness and a bright future.