空谷足音 kōng gǔ zú yīn

kōng gǔ zú yīn set phrase the sound of footsteps in a deserted valley; something hard to come by; something wonderful and rare
Domain: Idiom 成语 , Subdomain: , Concept:
Notes: (CC-CEDICT '空谷足音')

Word is mentioned most frequently in

Truncated for common words