Can You Improve Your Cultivation Level by Sacrificing Your Lifespan? That's No Longer Possible

In the Shenwu Dynasty, demons dance wildly. Xie Mu was reborn as a jailer in the Demon-Suppressing Prison with only three days left to live. Fortunately, he has awakened the innate magical power of [Sacrifice]. As long as he sacrifices his lifespan, he can infinitely improve his cultivation and skills. He can also absorb the blood essence of demons and convert it into lifespan. Sacrifice nine thousand years, get fifty years of life, and a Sunflower Book; Sacrifice the saint of the demon race and gain a lifespan of one hundred years and a Yin-Yang Joy Gong; Sacrifice the leader of the demon sect and gain a life span of two hundred years and a banner of ten thousand souls; ... Several years later, the demon in the Demon Suppression Prison was as skinny as a stick. Demon Cult Leader: He comes every night and I can't stand it anymore... Monster Saint: I'm really about to be drained... Nine Thousand Years Old: I don't have a drop left...