心心相印

two hearts beat as one (idiom); a kindred spirit

heart / mind / intention / center / core / CL:顆|颗[ke1],個|个[ge4]

each other / one another / mutually / fret on the neck of a pipa 琵琶[pi2 pa5] (a fret on the soundboard is called a 品[pin3])

appearance / portrait / picture / government minister / (physics) phase / (literary) to appraise (esp. by scrutinizing physical features) / to read sb's fortune (by physiognomy, palmistry etc)

surname Yin / abbr. for 印度[Yin4 du4]

to print / to mark / to engrave / a seal / a print / a stamp / a mark / a trace / image