谷: Surname, the essence of sustenance.
兰: The orchid, one of the Four Gentlemen among flowers, often symbolizes individuals of noble and virtuous character in names, which is beneficial for garnering affection and respect from others.
Meaning: The name 'Gu Lan' carries a melodious tone, with 'Gu' symbolizing vastness and abundance, and 'Lan' representing elegance and purity.