From what Xiao understood, his affinity to fire was far above what anybody could ever comprehend. By cultivating Omega Asura's Wrath, Xiao had attained the perfect affinity for flames. This had many functions that were helpful to him, and the moment Xiao reached a certain cultivation level, information regarding the cultivation technique was imprinted in his mind by Omega Asura's Wrath.
Xiao would have perfect control over fire. By now, he had a certain aura that would make him more approachable to those who walked the path of fire. It would make Xiao feel more comfortable with them. If a flame spirit were here, then it's sure that they would all be surrounding him, but all these were just the tip of the iceberg.