Farm, farm, farm hard, no matter what magic products are in front of the mass production line, they are all cheap. The equipment of your ace army is not as good as my ordinary soldiers, how can you fight with me.
The protagonist caught up with the craze of time travel and successfully came to the magical but backward medieval world. Farming is the truth and knowledge is the strongest sword. He uses the strange portals in this world to go to other worlds to obtain resources and conquer enemies.
