ㄈㄥˋfèngㄇㄠˊmáoㄌㄧㄣˊlínㄐㄧㄠˇjiǎo ​fèngjiǎo ​fèng máo lín jué​ㄈㄥˋ ㄇㄠˊ ㄌㄧㄣˊ ㄐㄩㄝˊ

  1. 比喻稀罕珍貴·種玉·》:駙馬鳳毛麟角公主玉葉金枝果然王侯。」麟角鳳毛」。百裡挑一寥寥無幾寥若晨星屈指可數比比皆是漫山遍野汗牛充棟車載斗量

lit. as rare as phoenix feathers and unicorn horns (idiom)​, fig. few and far between