Rebirth of Great Desolation: Devouring Donghuang Taiyi at the Beginning

Modern young people were accidentally reborn in the ancient continent, and became the Demon Emperor, one of the protagonists who was plotted by heaven and calamized by the lich. Due to fate, the causal system will be awakened. Let's see how the new emperor who holds the system will unify the ancient world and dominate the three realms...