HSK 3 · Shapes & Forms
内
nèi
inside; within
Stroke order of 内
内 is written with 4 strokes. Watch the animation, then try writing it yourself.
Memory trick
Someone enters 入 a frame 冂: it's inside.
Parts: 冂 border + 入 enter
Example sentence
请在三天内回答我。
Please reply to me within three days.