一挥而就 — “With one stroke, it's done”

The idiom "Yi Hui Er Jiu" originates from the Five Dynasties period. A talented scholar named Wang Lin was known for his remarkable speed in writing poetry.

Once, while composing twenty poems, a sudden storm scattered and damaged several of his drafts. Unfazed, Wang Lin simply called for fresh paper and, with a swift stroke of his brush, he instantly completed more than ten new poems. This event became a testament to his quick wit and effortless writing ability, giving rise to the idiom "Yi Hui Er Jiu," which describes the act of completing a piece of writing, painting, or composition rapidly and skillfully.

Later, during the Southern Song Dynasty, the national hero Wen Tianxiang was also renowned for his literary prowess. It is said that he "dashed off" a ten-thousand-character examination paper in an instant, showcasing his profound intellect and eloquent expression, further solidifying the idiom's meaning of rapid and skillful creation.