Dam refers to building to distinguish between one’s own house and another’s house. It is mainly a symbol of one’s own territory, namely the sphere of influence, interests and defense, that appears in dreams. A dream of seeing several people building walls or walls suggests that one’s territory or place of business is built by people around him. It is a dream that suggests that a researcher or student will be able to achieve his or her achievements and be in a position to direct and monitor his or her subordinates through his or her studies.