wandering
徨 centers on aimless movement without a fixed destination: wandering, roaming, or drifting.
徨 combines 彳 (movement, step) with 皇, which likely contributes the sound and may suggest a sense of expansive or aimless movement. The exact historical development is uncertain.
The left side 彳 represents a step or movement, and the right side 皇 suggests something grand or expansive. Picture someone taking aimless steps across a vast, open space, wandering without direction.
For コウ, imagine a wandering cow (こう) roaming freely across a field: cow -> コウ, and the cow's aimless wandering matches the kanji's meaning.