The test for the power of flames was simple, just use your own magic.
After the test, Zhao Guang affirmed the strength. "In terms of power, it is not inferior to my 'Undying Flame.' This means that for fire attribute magic, your power has more than doubled."
"How could that be, Master? Your flames can burn anything and remain lit for a long time, how could I compare to that?"
Zhao Guang shook his head, "You can't consider it that way, it's just that the properties are different."
His own flames possessed the undying attribute, could burn anything and caused sustained damage over time.
While Xi Fei's flames, though like normal flames in their instant eruption and swift end, carried an incredibly strong capacity for psychological and soul damage. If one were not powerful enough, a mere touch could lead to soul collapse.
Even if one could withstand it, it would still cause soul injury.
And injuries to the soul are not easily healed; they can be quite troublesome.
