What is the role of the ghost symbol "soul-eating method" in killing immortals? I heard someone say to save Lan. He must be lying to me. Please help us and talk about this "soul-eating method".

The true qi shield opened by Fairy Ghost Road has a blue effect. If you order the soul-eating method in the gobbledygook, then the talisman soul-eating method. If the fairy road is dead, the thicker the blue, the more medicine you save. Later, when your equipment is ready, the skill of hanging up will be changed, and the transformation time will be more efficient, but it is better to fight with less blue. . .