The main story is that a modern young man from the 21st century traveled to the world of Journey to the West and became a great sage brother. He conquered the three realms, became the strongest in the three realms, and then ascended to a higher world. By analogy, after ascending five times, he finally discovered that what he had traveled through was just a cell of his body in the 21st century, and that the universe was just an atom of a molecule of a human cell.
