to have become a widespread trend or general practice; to flourish and form a common custom

usages or customs arise from people imitating one another until they become common practice; to become a general trend

Describes a skill or technique so masterfully executed that it seems effortless or supernatural; based on a story from the [[庄子|莊子|zhuang1 zi3]] where a craftsman uses an axe to slice a speck of plaster off a man's nose without harming him.