Introduction to the Universe: The Seven-Level Pagoda The universe is composed of seven hierarchical levels of energy and spacetime structures: the Earth-Moon system, the Solar System, the Milky Way Galaxy, the Jintian System, the Chaos System, the Black Hole System, and the Vacuum System. Introduction to Life: Body, Mind, Nature, Law, the Middle Way, and True Nature In our life, there exists the True Nature above, the Middle Way in between, and the Body-Mind-Nature-Law as four sequential aspects below. Externally, there are six faculties: eyes, ears, nose, tongue, body, and mind. Introduction to the Truth: The Middle Way and True Nature The ultimate truth lies in the Middle Way and the realization of our inherent True Nature. Introduction to Culture: Characters, Words, Language, and Literature Culture is expressed through characters, words, language, and literature.