回信 (huíxìn) · to write back

回信 (huíxìn) means “to write back; reply letter”. It is written with 2 characters: 回 (to return) + 信 (letter). It is an HSK 4 word in the current exam syllabus (2025).

How 回信 is built

The characters

回 huí · to return

What 回 is made of

囗wéi — enclosure
- 冂 — frame
  - 丨 — vertical stroke
- 一 — horizontal stroke
口kǒu — mouth
- 冂 — frame
  - 丨 — vertical stroke
- 一 — horizontal stroke

Origin hint: Originally, a spiral signifying return (from the Make Me a Hanzi dataset; treat as a memory aid where history is uncertain)

信 xìn · letter

What 信 is made of

亻rén — person
言yán — words
- 亠tóu — lid
  - 丶 — dot
  - 一 — horizontal stroke
- 二 — two strokes
  - 一 — horizontal stroke
  - 一 — horizontal stroke
- 口kǒu — mouth
  - 冂 — frame
  - 一 — horizontal stroke

Example sentences

我收到了他的回信。Wǒ shōudào le tā de huíxìn.I received his reply.

请你早点回信。Qǐng nǐ zǎo diǎn huíxìn.Please write back soon.

Questions about 回信

What does 回信 mean?

回信 (huíxìn) means “to write back; reply letter”.

How do you pronounce 回信?

回信 is pronounced huíxìn.

Which HSK level is 回信?

回信 is in HSK 4 (exam 2025).

Related words

Learn 回信 with its group

It is part of HSK 4 · Group 31: a short group with quick checks and spaced repeats.

Open the group