铜
tóng · HSK 7
copper
🪙🔌 金 metal radical + 同 (tóng, same) gives sound: metal that's tóng = copper
铜 — metal radical 钅 + 同 (tóng)
A semantic-phonetic compound. The metal radical 钅 (金) gives the meaning, indicating a metal, while 同 supplies the sound 'tóng'. Originally referred to copper, one of the earliest metals worked in ancient China, and the character has retained this meaning.