Super Invincible Upgrade - LibNovels Learn more Zhou Peng accidentally travels through time, replaceing himself in a weakened and sickly body with a shattered dantian, unable to cultivate qigong. Fortunately, the heavens show mercy by bestowing upon him an upgrade system.A waste? That's all in the past...Leveling up by slaying monsters, effortless and hassle-free, he no longer has to worry about... Learn more