Prehistoric: Flying Sword System and People's Livelihood Merits

Yang Muzhao: traveled through time and became Yang Jian's brother, bound to the flying sword development system. Gain merit by defeating the black wolf, gain 100,000 merit points by inventing briquettes and saws, and refine mortal swords to the middle grade. Yao Ji secretly sent a fairy sword to help Yang Jian practice martial arts - in this life, the Yang family will not kneel to the heaven!