The word "赏心悦目" is formed through the conjunction of two parallel verb-object phrases: "赏心", where 赏 means "to appreciate" and 心 means "heart", thus "pleasing the heart", and "悦目", where 悦 means "to delight" and 目 means "eyes", thus "delighting the eyes". These combined create a four-character idiom expressing that something is visually and emotionally pleasing.