通知
tōngzhī · HSK 2
notify
📢 通 = through/pass + 知 = know — pass knowledge through to someone
通 means to go through or communicate; 知 means to know. Together they mean to pass knowledge through to another person, i.e. to notify or inform them. The compound is literal: communicate-know.
通 — 辵 (辶) walk + 甬 yǒng (phonetic)
通 is a semantic-phonetic compound. The 辶 (chuò) component means 'walk' or 'movement', giving the meaning of going through or passing. 甬 (yǒng), originally depicting a hanging bell or a path, supplies the sound. Together they convey 'to pass through, communicate, connect'.