Literature Reference: The cuckoo sings in spring, its voice reaching the ears. Source from 'The Book of Songs·Xiao Ya·Deer Call'.
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'."
宇:
Graceful and noble, the name embodies a broad mind and lofty ambitions.
Meaning: The cuckoo, a symbol of spring and vibrant life.