风行草偃 fēngxíngcǎoyǎn moral influence Origin Definitions Defs Strokes Stroke Words Sentences Sents 风行 風行 fēngxíng to be popular to become fashionable; to catch on or spread rapidly like the wind草 cǎo noun grass grass; straw; herbs; plants with non-woody stems偃 yǎn to fall over (bound form) to fall down; to blow over, as grass or grain in the wind