耳光
ěr guāng · HSK 7
a slap on the face
👋💥 ear + light — a slap by the ear so hard it makes a flash
耳 means ear, 光 means light or flash. The compound captures the sensation: a sharp open-handed slap to the side of the face, right on the ear, with a crack loud enough to make sparks fly.
光 — fire 火 (top) + person 儿 (bottom)
Originally a pictograph of a person with fire above their head, depicting a torchbearer or the radiance from a flame. The character evolved to mean 'light' or 'brightness' in general, and by extension 'glory' and 'to shine.' The modern top component is a stylized form of 火 (fire).