麟角凤觜

lín jiǎo fèng zuǐ

lit. qilin's horn, phoenix's mouth (idiom)

fig. rara avis; rarity

麟

lín

variant of 麟[lin2]

角

jiǎo

angle

凤

fèng

phoenix

觜

zuǐ

variant of 嘴[zui3]