When combined, 心心相印 paints a vivid picture: two hearts mutually “imprinting” upon each other, like two halves of a perfectly matched seal. When brought together, they form a single, complete, and flawless whole.
This idiom reflects the cultural value placed on harmony (和谐 héxié) and profound, unspoken understanding within relationships in Chinese culture.
心心相印 is a well-known idiom that carries a literary and heartfelt tone. It is not for casual use.