Shangdi was a star, a red supergiant body located in the Shangdi system, somewhere in the space of the galaxy's Alpha or Beta Quadrants.
History and specifics[]
The Shangdi star system was centered around this supergiant red star.
In the year 2259, the Federation starship Stardiver was conducting research on a series of coronal mass ejections from Shangdi in the Shangdi system. The ship was attacked by the Gorn and only one crewmember, Lieutenant JG Montgomery Scott managed to escape. He piloted his shuttle to Parnassus Beta in a neighboring star system. (SNW episode: "Hegemony")