凤毛麟角 (鳳毛麟角) fèng máo lín jiǎo

fèng máo lín jiǎo set phrase [like] phoenix feathers or unicorn horns; very rare
Domain: Idiom 成语
Notes: (CC-CEDICT '鳳毛麟角'; Guoyu '鳳毛麟角')