Start Guarding the World by Enlightening Evil Things

After traveling through time, Lin Zheng discovered that demons were raging in this world and evil things were everywhere. There are both exploitation by the court and cannibalism by evil spirits. A mortal can only struggle to survive. Fortunately, he did. With the yin and yang diagram, he can not only enlighten evil objects, but also deduce magic methods. A magical elixir tainted with evil spirits? If an ordinary person eats it, he will lose his mind and turn into an evil thing within a few moments. After Lin Zheng enlightens it, it becomes a magical elixir. The medicine is powerful and nourishes the flesh and blood, which just helps him break through the bottleneck. The spine left behind by the evil beast bone wolf? Although it is extremely hard, it is entangled with evil spirits. After Lin Zheng enlightened it, it became a white jade bone blade that can cut gold and stone like mud, without any side effects. Martial arts and spells can all be derived and sublimated, from [Spiritual Fire Technique] to [Fire Control Dharma] to [Natural Flame Planting Fire Wonderful Technique] to [Samadhi True Fire]. However, he accidentally discovered that the Yin-Yang diagram can also enlighten living creatures. The demon girl in front of her covered her eyes with red cloth and was sitting on her knees. Her lips were slightly open and her body was trembling slightly. Seeing that she was on the verge of degradation, Lin Zheng raised his eyebrows and sighed, he couldn't wait to die without saving her. So, he slowly stretched out his right hand.