A modern social animal traveled through time and became Li Xuanba, the "first fool prince" of the Tang Dynasty. He held an eight hundred kilogram drum, urn, and golden hammer. He wanted to pretend to be a fool and live in peace for the rest of his life, but he was thrown into the battlefield, into the court, and into all the whirlpools he didn't want to go to by his brother Li Shimin.
When he was finally forced to have no way out, people all over the world discovered that the hammer of this fool prince could smash the Turkic cavalry and open up the prosperous Tang Dynasty.