Bai Niao, Bai Niao

Bai Niao, or Cygnus, is one of the Polaris. The Latin name of Cygnus is cygnus, abbreviated as cyg. It means swan. At 20 o'clock on September 25 every year, the swan constellation rises to the sky. Summer and autumn are the best time to observe Cygnus. Interestingly, the rise and fall of Cygnus is really like a flying swan: it rises obliquely from the northeast to the sky, and when it reaches the zenith, its head points to the west. When it moves to the northwest, it turns head down, tail up and disappears on the horizon.