What do the stars at night represent?

It shows that the weather is fine and the light pollution is not serious.

Stars usually appear in summer, but they are rare in winter nights.

Because the solar system is located at the edge of the Milky Way, the third spiral arm of the Milky Way-Orion spiral arm. In summer, our night sky faces the center of the Milky Way, while in winter, it faces the outside. The distribution of stars in the Milky Way is uneven, and the density increases toward the middle, so the Milky Way is particularly bright in summer, and more stars can be seen.