晴天
qíng tiān · HSK 2
sunny day
☀️ 晴 (clear weather) + 天 (sky/day) = a clear-sky day
晴 splits into 日 (sun) on the left and 青 (blue/clear) on the right — the sun-radical signals weather, and 青 carries the 'clear' sense. Pair it with 天 (sky/day) and you get a literal 'sunny sky' compound.
晴 — sun 日 + blue/clear 青
晴 is a semantic-phonetic compound. The left element 日 (sun) gives the meaning — clear, sunny weather — while 青 (qīng) on the right supplies the sound. It originally referred to a sky cleared of rain, and still means 'clear/fine weather' today.
天 — 一 (one/sky) above 大 (big person)
Originally a pictograph of a person (大) with an emphasized head, representing what is above — the sky or heavens. The top stroke evolved into 一, symbolizing the vast expanse overhead. From 'sky' it extended to mean 'day,' 'heaven,' and 'nature.'