开心
HSK 3 (exam 2025)HSK 2 (2021)Old HSK 4
开心 (kāixīn) · happy
开心 (kāixīn) means “happy; to have a good time”. It is written with 2 characters: 开 (to open) + 心 (heart). It is an HSK 3 word in the current exam syllabus (2025).
How 开心 is built
The characters
开 kāi · to open
What 开 is made of
- 一 — horizontal stroke
- 廾gǒng — two hands
Origin hint: Simplified form of 開; hands 廾 lifting the latch 一 of a door (from the Make Me a Hanzi dataset; treat as a memory aid where history is uncertain)
心 xīn · heart
What 心 is made of
心 is not built from smaller parts; it is written with 4 strokes.
Origin hint: A heart (from the Make Me a Hanzi dataset; treat as a memory aid where history is uncertain)
Example sentences
今天我很开心。Jīntiān wǒ hěn kāixīn.I'm very happy today.
你玩得开心吗？Nǐ wán de kāixīn ma?Did you have a good time?
Questions about 开心
What does 开心 mean?
开心 (kāixīn) means “happy; to have a good time”.
How do you pronounce 开心?
开心 is pronounced kāixīn.
Which HSK level is 开心?
开心 is in HSK 3 (exam 2025) and HSK 2 (2021) and Old HSK 4.
Related words
- 打开dǎkāito open
- 开车kāichēto drive
- 开会kāihuìto have a meeting
- 开玩笑kāiwánxiàoto joke
- 分开fēnkāito separate
- 开机kāijīto turn on (a phone, computer etc.)
- 开学kāixuéschool starts
- 离开líkāito leave
- 走开zǒukāito go away
- 公开gōngkāipublic
Learn 开心 with its group
It is part of HSK 2 (2021) · Group 76: a short group with quick checks and spaced repeats.