谈到
tándào · HSK 7
speak to
💬 谈 talk + 到 arrive = talk that arrives at a topic = bring it up, mention it
谈 means to talk or discuss; 到 means to reach or arrive. Together the talk reaches a subject, so 谈到 is to touch on, mention, or refer to something. The 言 speech radical on the left of 谈 marks it as a word about speaking.
谈 — speech radical 讠 + flame 炎
谈 is a semantic-phonetic compound. The left side 讠 (speech) gives the meaning, indicating something said or discussed. The right side 炎 (flame, blaze) originally suggested the phonetic value and evokes lively, animated talk — like words flowing in conversation.
到 — 刂 knife + 至 (phonetic, 'arrive')
到 is a semantic-phonetic compound. 至 ('to arrive') gives both meaning and sound, while 刂 (knife) was added later, likely as a phonetic reinforcer or to distinguish the written form. The core sense 'to arrive, reach' comes directly from 至, and 到 has carried that meaning since early script forms.