'Chuí qīng' literally combines 'chuí' (to lower, to extend downward) and 'qīng' (blue/green, historically associated with youth and vitality). In classical Chinese, 'qīng yǎn' (blue eyes) symbolized a favorable or approving glance — hence 'chuí qīng' evolved to mean extending such a favorable, appreciative look toward someone. It conveys respectful recognition, often from a person in authority or senior position toward a junior, talented individual.

The phrase carries formal, literary overtones and is commonly used in written contexts: award announcements, recommendation letters, official commendations, or historical narratives. It implies genuine admiration or endorsement, not mere politeness. While grammatically a verb, it’s typically used transitively with an object (e.g., 'chuí qīng yú mǒu rén' — 'favor someone'), though the preposition 'yú' is often omitted in modern usage.