I Use Modern Warfare to Unify the Original Tribes

The king of special forces transforms into a primitive tribe boy and faces the first challenge when he opens his eyes: a sneak attack by a poisonous snake. When the tribesmen gathered around and prepared to use witchcraft to treat him, he accurately selected the snake herb from the herbs with his backhand to save himself. Make a fire? He took out a flint and steel, shocking the onlookers; weapon? He casually made a bow and arrow, doubling the tribe's combat power. While other tribes were still relying on brute force to fight hand-to-hand, he had led his tribe to sweep across the country using entrapment and tactics. Until one day, the opposite tribe carried out the "god" they worshiped - a prehistoric giant beast. He smiled slightly and ignited the secret gunpowder behind him.