[はいていらおゆえ, haiteiraoyue](n) totally useless (fruitless) effort; wasting time on an impossible task (like trying to scoop up a reflected moon from the bottom of the sea)[Add to Longdo]
[きょうかすいげつ, kyoukasuigetsu](n) flowers reflected on a mirror and the moon reflected on the water's surface; something that is visible but having no substance; the subtle and profound beauty of poems that cannot be described in words[Add to Longdo]