It is a dream that only you dream of when you are isolated in your family. Because there is no exchange between family members, and affection becomes scarce, they always lock the door of their mind, so they dream of the key. It symbolizes the ability to open, find, solve, explore, succeed, remove, and pass through closure, fix, break, difficult problems, academics, unknowns, etc., the way to go, the way to go, the way to cooperate, etc.