冰壶秋月 (冰壺秋月) bīnghú qiū yuè

bīnghú qiū yuè set phrase jade ice jug and autumn moon; spotless white and pure
Domain: Modern Chinese 现代汉语
Notes: Idiom, from poem by Song writer Su Dongpo 苏东坡 (CC-CEDICT '冰壺秋月')