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'."
丁: The fourth of the twelve Heavenly Stems, also symbolizing population.
Meaning: The name has a simple and pleasant rhythm, symbolizing simplicity and purity.