Datang: the Defense Has Been Broken, Li Shimin Is Actually My Father

[Fast-paced + Super cool writing + Brain-burning without losing logic] Li Su traveled to the Tang Dynasty with a lottery system, and mistakenly identified Li Shimin, who was visiting privately in private, as his father. From then on, he started a legendary journey. The smallpox plague is rampant inside and outside Chang'an City... What, this cowpox can prevent people from getting smallpox? Tubo's 200,000 cavalry forced the princess to marry... What, is this thing called a thundering grenade? Goguryeo must be destroyed at any cost... What, the special forces beheaded the King of Goguryeo. The steps are too big and the financial crisis... What, you guarantee that the Japanese country is full of silver mines.