Traditional Culture Encyclopedia - Weather forecast - It's cold, it's hot, it's dawn and it's dark. Will innocence change? Why?

It's cold, it's hot, it's dawn and it's dark. Will innocence change? Why?

This is related to the earth's rotation and revolution. Rotation: facing the sun is night, facing the sun is day. The rotation period is about 24 hours, so there will be day and night in a day. Revolution: There are four classes, namely, the vernal equinox, the summer solstice, the autumn equinox and the winter solstice. They are spring, summer, autumn and winter. So the weather will be cold, hot, bright and dark.