Burning one's own immortal soul was the trick used by immortals in their desperation. But, after the soul burned, even if the immortal successfully killed the enemy and escaped, the cultivation base he had worked on hard all his life would be gone, and his only option would be to reincarnate in the state of a soul and begin cultivating again. Regardless, once an immortal burned his soul, he would possess ten times as much power as he had at his peak for a short period. Although this period of time would not exceed a quarter of an hour at most, it was enough for an immortal whose immortal soul was burning to destroy a lot of things.
By the time Wu Qi managed to calm the disordered energy in the formation, neutralize the two energy bombs in the north and south, and flew over the gradually subsiding volcanic region, the battle between Bo Yunting and the hundred fleeing Gold Immortals was over.