How Much of the Realm Can I Call Mine?

With nothing but common clothes on his back and a three-foot sword in hand, he claims all under heaven. This is the Mandate of Heaven. In the final years of the Great Yan, the realm fell apart and warlords rose up everywhere. The Marquis of Qi held sway over Qing, Yan, and Yu Provinces, using the emperor to command the lords. Unfortunately, his sons fought over the succession, bringing disaster in their wake. The heir was deposed, and all his guests and officials were thrown into prison. Gu Dianke, the heir's chief secretary, was over sixty when he died violently in prison. The Marquis of Qi spared the Gu clan from punishment, but the illustrious family, which had flourished for a hundred years, fell into decline from then on. Then the pages of history turned, and the Book of Chu replaced the Book of Yan. This story begins with the second daughter-in-law of Gu Dianke dreaming one night of a golden dragon entering her arms... P.S. The male lead will marry, but there will be no romance, so this is a no-couple story.