wind-resistant grass; resilient idea
Literally a blade of grass that withstands strong wind; metaphorically a person or idea that remains firm under pressure. Often used in literary or philosophical contexts.
The wind-resistant grass does not fall even in a strong wind.
彼の主張はまさに勁草のごとく揺るがなかった。
His argument remained unshaken, just like a resilient blade of grass.