His domain is the southern quarter of Heaven, where he rides a tiger and presides over Universal Order.
Legend tells that he was so proud of helping to establish Heaven and Earth that the authority went straight to his head. When GONG-GONG came along boasting of supreme magnificence it was more than his ego could bear.
After much bickering and insult-throwing, the two of them elected to settle their differences in true Godly fashion. They decided to fight it out.
The battle raged across Heaven for days, causing great uproar. Finally both ZHU-RONG and GONG-GONG fell overboard and plummeted to Earth.
GONG-GONG admitted defeat and slunk away to kill himself, while ZHU-RONG returned to Heaven in triumph. No-one messes with the God of Fire.