What is a season, a scene, a sand and a world?

The meaning of "one scene in one season, one world in one sand" means that every season will present different scenery, and every dust may breed a world. "One scene in one season" means that in a season, there will be differences in landscape changes, because there are four seasons in a year, spring, summer, autumn and winter, and each season will have different landscapes. A world in a grain of sand means that even a tiny dust may have a world and a universe. Therefore, "one scene in one season, one world in one sand" means that every season will present different scenery, and every grain of dust may breed a world.