Why are there so many stars in Dingxi, Gansu at night?

Transparent vision, open environment and so on. Gansu Xiding belongs to the northwest region. The reason why there are many stars in northwest China is that the vision is transparent and the environment is empty, with an average annual sunny day of nearly 300 days. This is one of the best places to watch the stars, and it is known as the "hometown of stars". The activity of energy inside the star makes the shape of the star irregular. Stars can be divided into planets, stars, comets, white dwarfs and so on.