The name of this article wasn't revealed in the novel and instead was given by editors of the wiki as substitute for lack thereof.
It is a training ground of the Nine Saint Demon Gate.
Nine Saint Demon Gate's Battle Stage is of the Virtuous Paragon level. It was created by the Gate's Great Elder. It consists of huge meteoric stones. Each stone was encrypted with the words of many Virtuous Paragons; mysterious and powerful energy was exerted from them continuously. It was this energy that protected the battle stage, rendering it impervious to any damage by the contestants. It can even withstand the destructive power from multiple Virtuous Paragons.
- Main article: Tetra-War Stone Protectors