A Clean Start and a Three-Level Upgrade in Cultivation

Seventy years after the revival of immortal energy, it has become possible for everyone to cultivate immortality. Monsters are rampant, and big monsters come to the world. The realm of self-cultivation has become a top priority in society. Looking for a job depends on the realm rather than the diploma. Li Yan traveled through time and became an ordinary high school student, but by awakening the system, he can improve his cultivation! Li Yan: "Oh? Otherwise... I'll go dry the quilt first and kill some mites, and see how much I can level up?" Cultivation. Just fight monsters and upgrade. Liver, liver and all!