move
徙 centers on physical relocation: moving from one place to another.
徙 combines 彳 (movement) with a right side that historically represented footsteps or stepping, reinforcing the idea of moving or relocating.
The left side 彳 suggests a path or movement, and the right side 歨 looks like repeated steps (止 over 止). Picture someone stepping along a path to move to a new place.
For シ, imagine a person moving and saying 'she' is relocating: she -> シ, and the movement continues.