Chinese

{| style="clear: right;margin: 1em;border-collapse: collapse;text-align: center"

|- ! !day; sky; heaven !grain; millet !horse !horn |- !trad. (天粟馬角) | 天 | 粟 | 馬 | 角 |- !simp. (天粟马角) | 天 | 粟 | 马 | 角 |- !Literally: “Grains or millet falling from the sky, and horses growing horns”. |}

Idiom

天粟馬角

1. unfeasibility