In the future, three meals a day and four seasons can be expected, which means that no matter which season or era, three meals a day are necessities, and the future is predictable. "Three meals a day can be expected in four seasons" is a popular slogan, which means "No matter in which season or era, three meals a day are necessities and the future can be expected". This sentence conveys people's basic needs for life and optimistic confidence in the future, and expresses their cherish for life and expectation for the future.