雅: Grace and refinement. It conveys a sense of cultivation and beauty.
杜: Du Kang, Du Fu. The character "Du" refers to the sweet pear tree, as stated in the "Shuowen Jiezi" dictionary: "The male is called 'Tang', and the female is called 'Du'."
Meaning: Yǎ signifies elegance and grace, while Dù embodies resilience, stability, and simplicity.