The flame in Fang Bai's palm was precisely the Red Silkworm Spirit Fire he had subdued in the "Eternal Death Zone" of the Minor World.
The Red Silkworm Spirit Fire had incredible power and destructive capability. It had once turned a thousand miles of land into barren grounds in the Minor World, creating an underground Fire Spirit Stone vein that incited countless battles and disputes among martial artists.
If it weren't for Yang Dong being a Golden Core realm expert with overwhelming strength, Fang Bai would not have unleashed the Red Silkworm Spirit Fire to defeat the enemy.
Among all the abilities and methods Fang Bai could currently employ, the Red Silkworm Spirit Fire was the most powerful.