It was rainy yesterday, and the sun is shining brightly today.

Time comes.

It was rainy and gloomy yesterday, making it inconvenient to go out. Today the sun is shining brightly, the weather is fine, and it is suitable for travel. The weather has changed from bad to good.

The bright sun shines high in the sky: The bright sun hangs high in the sky and shines on the earth, describing the weather as very good. When describing people or things, it is a metaphor for a bright future, showing a good situation.