When you see the street there are grandfathers and grandmothers still holding hands for a walk, and why inexplicably yearning? From a psychological to scientific point of view, it can explain the meaning of holding hands with a partner. Whether you didn't realize it in the past, holding hands is an act of pure desire, a departure from your heart, and it also has multiple messages - I think you, I like you, you are important, and I want to protect you.