Definition of 飛花落葉 (ひからくよう)

expression
Blossoms fall and leaves scatter, the evanescence (impermanence) of worldly things(yojijukugo)
Related Kanji
fly, skip (pages), scatter
flower
fall, drop, come down, village, hamlet
leaf, plane, lobe, needle, blade, spear, counter for flat things, fragment, piece