They Agreed to Use Poison to Prove the Tao, but in the End They Became Poisonous Immortals

There is a saying in the world that there is a man named Yanqi in the forbidden place "Zhiyuan". He kills people and slaughters the city like breathing in the blink of an eye. The gods weep blood and hundreds of ghosts howl. Later, he uses poison to realize the Tao, and he ascends to heaven. People call him the "Poison Saint". Later, his son Yan Qi had a dream on a snowy night when he was thirteen years old. His father Yan Qi warned that killing too many poisons would harm the peace of the world. Now he is undergoing labor reform in the Nine Prisons of Yin Guan. He repeatedly warned Yan Qi to make good fortune, punish evil and promote good. So Yan Qi, who was originally planning to slaughter the people and repeat the same mistakes as his father, put away the forbidden area "Zhiyuan", went out of the mountain in a low-key manner, and came to the vast world to ask questions sincerely. As a result, there is no "Poison Saint" who keeps no living thing in the world, and there is a confusing "Poison Immortal".