jiān / jiàn
measure word HSK 1 #590

Meanings

  1. 1 between; among; within
  2. 2 classifier for rooms

Characters

(door) + (sun) - sunlight peeking through a door.

Examples

HSK 1
Zhè jiān fángjiān hěn dà.
This room is very large.
HSK 2
Shíjiān guò de zhēn kuài.
Time passes really fast.
HSK 7-9
Liǎng dòng lóu zhījiān yǒu yī gè xiǎo gōngyuán.
There is a small park between the two buildings.

Tips

usage
As a measure word counts rooms: 卧室 (one bedroom), 教室 (three classrooms). The same reading anchors the abstract 'between / interval' family: 时间, 空间, 中间, 之间.
mistakes
Two readings. (1st tone) = the everyday 'between, space, room' sense - by far the more common: 时间, 房间, 空间. (4th tone) = the narrower 'gap / to separate / drive apart' sense, almost always bound in compounds: 间隔, 间谍, 离间. When in doubt, read jiān.

Components

radical
mén
door; gate (radical)
Outer door/gate radical (Kangxi #169) - simplified from , originally a pair of swing-doors. Surrounds from above and the sides. Carries the visual core: the character pictures a slit between the two doors, hence 'between, interval, room.' The same radical anchors (ask), (hear), (noisy), (flash) - things that happen at, through, or behind a doorway.
semantic
sun (semantic)
Inner sun component - pictograph of the sun with a central stroke. The compound reads: sunlight through the crack between two doors = gap, interval, moment between. Originally written with 'moon' (moonlight in the doorway); the -version became standard and was later simplified to . Used as a measure word for rooms because each room is a partitioned interval.

Stroke Order

jiān