1, take its essence and discard its dross is an idiom in China. The pronunciations of q ǔ qí j and ng huá q ù qí z ā o pò mean to absorb the best things in things and discard the bad and useless things in things.

2. Ma Nancun's "Don't Secret": "We now advocate reading with a critical eye, taking its essence and discarding its dross, which ancient scholars did not have the courage to put forward."