In a shop opened by the Blazing Fire Sect, Zhang Wan bought a Postnatal mid-grade spirit flame, the "Azure Heart Flame."
It had been taken from the lava inside a volcano.
This single spirit flame cost one hundred and fifty low-grade spirit stones, making it more expensive than ordinary Postnatal top-grade artifacts.
Moreover, to maintain the spirit flame's power and keep it from exhausting itself and going out, materials had to be continuously fed to it as fuel.
Fortunately, maintaining the existence of the Azure Heart Flame was not troublesome. In fact, compared with ordinary spirit flames, the Azure Heart Flame was easier to sustain.
So long as mud, soil, sand, or stones were fed to it, they could supply the power the Azure Heart Flame consumed in its daily existence.
However, ordinary mud, soil, sand, and stones could only preserve the Azure Heart Flame's power; they could not improve its quality.
To raise the Azure Heart Flame to Postnatal top-grade or Postnatal peak-grade, one had to supply it with spiritual soil and spirit stones of sufficient grade for it to devour—and quite a lot of them at that.
Of course, after the Azure Heart Flame's quality was improved, ordinary mud, soil, sand, and stones could still be used as its daily fuel.
That was also where the Azure Heart Flame was convenient.
However, its power was correspondingly rather underwhelming. Among spirit flames of the same grade, it could not even make the rankings.
If the Azure Heart Flame were used to kill enemies, it could only bully the weak.
The Postnatal mid-grade Azure Heart Flame could at most burn Postnatal Third or Fourth Level martial artists.
Against a Postnatal Fifth Level martial artist, it would have difficulty posing any threat.
Its strengths and weaknesses were both exceptionally pronounced.
But