小 ('little/young') +
薇 ('rose/fern') is a common affectionate name for a girl whose full given name contains
薇. The 2000 Mandopop song 《
小薇》 (Xiao Wei) by
黄品源 (Huáng Pǐnyuán, Huang Pin-yuan) — chorus 'There's a beautiful little girl, her name is Xiao Wei' — turned the nickname into a karaoke staple across the Chinese-speaking world.