Legend of the Immortals of the Tang Dynasty

Li Shengxia, who traveled back to the Tang Dynasty with a black technology system, continued to influence other people with his own hands and knowledge. When the influence factors continued to spread, life became better and better. People felt that life had risen from hell to heaven in a few decades, so Li Shengxia was also called an immortal from heaven. One day, this immortal really created an immortal weapon. No one knows whether he returned to heaven or not.