Reign Over the World: The Great Xia Emperor

College student Lin Mo transmigrates into the useless Sixth Prince of Great Wei. After saving the Crown Princess and being falsely accused, he is imprisoned. Just as he waits to die in the dungeon, the Northern Manchu Empress leads fifty thousand cavalry south, while Emperor Qing'an flees with officials, entrusting Lin Mo to defend the city. In this life-or-death moment, Lin Mo activates a system: by strengthening his family, he gains troops, supplies, and weapons. Ultimately, he persuades the Northern Manchu Empress Xiao Yuerong at the battlefield to unite the world and usher in a prosperous era.