If the opponent is one rank higher than oneself, such as Qi Cultivation compared to Foundation Establishment, the loss of lifespan for the opponent would reduce by at least half. The specific loss of lifespan would depend on the cultivation level of the opponent, with the maximum reduction being half of one's offered lifespan.
As for a bigger gap, such as Qi Cultivation cursing a Golden Core, the loss of lifespan ratio might be even further reduced. Nonetheless, this is still a chilling Forbidden Technique.
After all, one level of Qi Cultivation could exchange for the lifespan of nine levels of Qi Cultivation, which was an incredibly profitable effect!
Liang Sheng was overjoyed at this and was glad that he had decisively killed the opponent. Otherwise, if he had lost some lifespan, it would have been a huge loss for him.
