冷冷淡淡无心栽柳寻寻觅觅不复笑颜
[lĕng lĕng dàn dàn wú xīn zāi liŭ xún xún mì mì bù fù xiào yán]
A rather literary construction that translates roughly into 'In a cold and detached manner planting willows absent-mindedly; seeking and searching yet no longer smiling.' It conveys feelings of melancholy and disinterest while engaging in aimless actions, with a tinge of nostalgia for lost happiness.