界线很清楚。
The line is clear.
limits; bounds; dividing line
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
Nice writing!
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
界线很清楚。
The line is clear.
别越过界线。
Do not cross the line.