How is a director's style formed?

The formation of a director's style depends on a director's values, outlook on life and world outlook. The second is the director's personal expression of ideas and feelings. The third is to look at the director's expression and understanding of art. They will add their knowledge of the world to the works they direct. Or the director's own understanding and cognition of the work and his feelings infiltrated into the work. Another is the director's appraisal of art, which can also form a unique style.