Many Children, Many Blessings: Starting the Conquest of the World by Taking Wives

To avoid being dragged into the struggle for the throne, Lu Chen had no choice but to lie flat, intending to spend his life quietly enjoying wealth and honor. Due to his mother's status, Lu Chen was eventually granted a marriage by the Emperor and was enfeoffed as a prince in the bitter, cold lands of the north. Just as Lu Chen thought he would spend the rest of his life in decadence, he activated a system on his wedding night. As long as he fathered an offspring, Lu Chen could obtain rewards and increase his own strength. Many years later. Lu Chen led an army of a million men into the capital to support the Emperor, leaving everyone stunned. "Isn't this guy a useless prince? Where did he get a million-man army!" "What's going on? He's actually a Grandmaster?" "It turns out the ninth prince's decadence was all an act!" ...