Lin Yuan had made a promise to the Blue Flash Purple Butterfly, one of his partners. If the Kill Food Sky Butterfly died after sacrificing its bloodline, the Blue Flash Purple Butterfly would be seriously affected. It was even possible that the Blue Flash Purple Butterfly would never get over its grief.
He did not want his partner to be in pain for the rest of its life.
The earth-type heavenly-maiden-grade elemental pearls landed on the white flames surrounding the Kill Food Sky Butterfly and immediately became a flood of earth-type elemental energy.
The pure earth-type energy was enough for the Kill Food Sky Butterfly to regain its senses.