The word 光临 is formed by combining two characters: 光, which here carries the meaning of "honor" or "glory", and 临, which means "to arrive" or "to be present". Together, they create a compound where the arrival (临) is metaphorically illuminated or honored (光), forming a single polite term that expresses the idea of a "gracious arrival" or "honored presence", typically used as a respectful way to welcome someone.