You Cultivate Demonic Energy and I Cultivate Immortality

One day, the world was shrouded in black mist. At that time, the sun could not be seen in the sky, and all the birds and beasts turned into demons, massacring human beings because guns and cannons could not hurt them at all, and hundreds of millions of human beings were killed or injured. It wasn't until a researcher purified the black energy that filled the world and injected it into the body that mankind was able to stand up again and avoid the disaster of annihilation. But they were still squeezed into cities. When the black devil's energy enters the body, it will devour the soul... Humans will eventually become demons... One day, Liu Bai from the earth traveled through time. While others cultivated demonic energy, he cultivated the power of golden light. The golden light flashes, and all the demons in the world are transformed! And he has become the only light in a world polluted by evil spirits! [In fact, this book is not invincible]