Great Tang: I Take Li Shimin Along to Rebel

Li Yu transmigrates to the Tang Dynasty and becomes Li Shimin's illegitimate son, in charge of a vast estate. When Li Yu transmigrated, he brought along a Super Lottery System. The System is incredibly powerful, rewarding him with all sorts of things: the process for making white paper, printing, pearl grenades, pistols, grenades, and blueprints for coal mines, among other things. A month later, as heavy snow approaches, a number of rebel factions seize the opportunity to rise up. Li Yu watches from the sidelines as they fight each other, then steps in to clean up once both sides are battered and takes them over in the process. Realizing the time is not yet right, Li Yu continues expanding his business empire. He campaigns north against the Turks, Goguryeo, and other countries, and his name resounds throughout the Tang Empire. Next, at his father Li Shimin's suggestion, he launches a rebellion, only to discover that his father is Li Shimin...