內
nèi HSK3

inside

内 (內) nèi
within directional
inside a specified limit of time, distance, or scope

请在一周内回复我的邮件。

qǐng zài yī zhōu nèi huí​fù wǒ de yóu​jiàn.

Please reply to my email within a week.

inside directional
the inner part or interior of a physical space or object

建筑物内禁止吸烟。

jiàn​zhù​wù nèi jìn​zhǐ xī​yān.

Smoking is prohibited inside the building.

internal directional
relating to the inner or domestic affairs of a country or organization

该国对内实行税收改革，以刺激经济增长。

gāi guó duì nèi shí​xíng shuì​shōu gǎi​gé, yǐ cì​jī jīng​jì zēng​zhǎng.

The country implemented internal tax reforms to stimulate economic growth.

Frequency
Character
Written text
175th most common 1195.5 per million
Movie subtitles
369th most common 407.1 per million appears in 81% of films
Word
Movie subtitles
191.8 per million appears in 48% of films
Written text
764.1 per million

Details
HSK 2.0
Level 4
HSK 3.0
Level 3
Simplified
内
Strokes
4
Unicode
U+5167

Sources
Definitions
CC-CEDICT
Frequency data
MTSU Chinese text computingSUBTLEX-CHBCC Corpus (BLCU)