Draw the magnetic field lines around a bar magnet.

The magnetic field lines of a bar magnet represent the region of influence around the magnet.
$1$. Outside the magnet,the magnetic field lines emerge from the North pole $(N)$ and terminate at the South pole $(S)$.
$2$. Inside the magnet,the field lines move from the South pole $(S)$ to the North pole $(N)$,forming continuous closed loops.
$3$. The density of field lines is higher near the poles,indicating a stronger magnetic field in those regions.