This Salesman Is a Bit of a Monster

During the transformation period of the Ming Dynasty, the emperor was obsessed with alchemy, and the demons were trusted by the emperor, causing chaos in the government and the public, and evildoers wreaked havoc on the world, making the people miserable. Even if there are all the heavenly masters in Longhu Mountain, they can only keep one side safe, far away from the land under the emperor's feet, and they are deeply poisoned by evildoers... A small mountain village was massacred, and only one person managed to escape. As the only survivor in the village, he had no way to take revenge. If you get an opportunity by chance, you can be reborn, eliminate demons and defend the way. The price is to turn yourself into a half-demon... "Tell me, why do you want to worship me as your teacher, why do you want to devote yourself to this cause and effect?" "I want to take revenge. Monsters are causing harm to the world. I want to kill all the monsters in the world. I want to protect a peaceful and prosperous world!" "Your answer... I don't like it, so I won't teach you. I'll try to understand it again." Carrying the blood feud of the village, the storm in the temple, and all the people in the world, how should the young man make a choice?