I Came Here at the Call of This Continent

There is such a continent. The last time they opened the portal, the earth was still in the cold weapon age. They were eyeing the rich resources here and planned to plunder it the next time the portal opened. However, when the door opened again after a thousand years, and they set foot on this land as they wished and started burning, killing and looting, it also brought the most enthusiastic response from the earth—— A joint task force embarks on their own journey of struggle. Go up to train guerrillas, help fight dragons, and eliminate landlord bullies. I went down to dig wells, repair houses, and treat fellow villagers... This is a war of swords and magic, but it is also a war of steel, gunpowder and chariots.