good, beautiful, badge
徽 centers on something that stands out as excellent or marks distinction: a badge that signifies quality, or the beauty and goodness that make something worthy of recognition.
徽 combines 彳 (movement/action) with a phonetic element that also suggests fine or excellent. The character likely developed to express a mark of distinction or excellence, such as a badge or emblem.
The left side 彳 suggests a path or action, and the right side looks like a decorated emblem with 山, 一, and 糸 (thread). Imagine a beautiful embroidered badge sewn with fine thread, marking something good and excellent.
For キ, picture a key-shaped badge that unlocks recognition for good deeds: key -> キ, and the badge marks the beauty of the act.