Reborn and Blessed with the System, but Can Only Make Iron?

[Rebirth + System + Resurrected Cultivation World + Troubled Times] A young white-collar worker accidentally traveled through time and was reborn, and got the system. But this system lacks energy and seems to be a bit of a trap? Um? ! There are many families in this alien continent, and there are disputes among various countries. Many years later, wars broke out and heroes competed. How should a commoner choose? On the road of cultivation, hundreds of people compete with each other. Mysterious energy is revived, and the trend is coming. Can he stand on the edge of the storm and skyrocket? In troubled times, heroes emerge! The Silver Hammer boy was born! Champion Lin! How did a time traveler with flesh and blood become a legend step by step?