Conquering Another World, Starting with Gunpowder

In a magical world, Chen Ying is sent to a remote frontier that has been enfeoffed in name but actually exiled. The land is so barren it has almost no monsters or resources for cultivation, and thousands upon thousands of beastmen constantly harass it. How can he rely on a not-so-smart System to start from scratch and, in most cases, use his own ingenuity to win the world? [(Emphasis on individual ability), (farming and development), (firepower above all)]