附
fù · HSK 7
attachment
📎 附 = 阝(mound) + 付(hand giving) — hand attaching to a mound
The 阝on the left is a mound/place radical; 付 (fù) means to hand over and also supplies the sound. Together: to attach or append something to a place. Same fù sound as 付, so the phonetic does double duty.
附 — 阝(mound) + 付 (fù, give/attach)
A semantic-phonetic compound: the 阝 'mound/hill' radical hints at meaning while 付 'fù' supplies the sound. Originally referred to a small mound or hill附属 to a larger one, which extended to the modern senses 'attach, append, be near'.