催促
cuī cù · HSK 7
to urge
⏰ cuī cù sounds like a cuckoo clock — always urging you its time to move
Both 催 and 促 independently mean to urge. A cuckoo bird never stops calling, just like someone who keeps pressing you to hurry up.
催 — person 亻 + 崔 (cuī, phonetic)
催 is a semantic-phonetic compound. The person radical 亻 gives the meaning, since urging or hurrying is something one person does to another, while 崔 supplies the sound 'cui'. The original sense was to press or push someone to act, which broadened to today's meaning of urging, hastening, or prompting.