hearts linked as one, just as a rhinoceros is said to communicate through its horn; used to describe mutual understanding or shared feelings between lovers or close friends

Short form of [[心有灵犀一点通|心有靈犀一點通|xin1 you3 ling2 xi1 yi1 dian3 tong1]], describing the state of being spiritually connected, sharing a mutual understanding, or having a deep romantic bond; can also describe someone who is exceptionally quick-witted.

a spiritual link or likeness of mind; two hearts beating as one

Two people being so closely aligned in thought or feeling that they can sense each other's mind; having a mutual understanding or telepathic connection