The name "Celestial Star" sounds very much like the birthplace of the Celestial Race, but in fact, Celestial Star originally had no connection with the Celestial Race whatsoever.
The true birthplace of the Celestial Race is Sky Pinnacle Star, and the original name of Celestial Star was something else—it was renamed by the Celestial Race after they discovered it.
What it was called before is no longer known.
Because very few have ever visited Celestial Star, throughout the generations, only the Heavenly Emperor and his favored imperial consorts, or the imperial relatives, have had the privilege of residing on Celestial Star.
Since its discovery, Celestial Star has been used as the Heavenly Emperor's cultivation ground.
Heavenly Emperors through the ages have all cultivated on Celestial Star for a period, some since childhood, while others only after acquiring the throne.