In 627, Li Yi's rebellion failed. Jieli Khan of the Eastern Turks led an army of a hundred thousand south to attack the Tang dynasty, forcing Li Shimin to sign the Weishui Alliance. That same year, after Li Yi's rebellion was crushed, Li Shimin dispatched a special envoy. On the road, the envoy found a six-year-old boy named Li Kuan lying on the ground, with a safety lock engraved with a golden dragon around his neck. He took Li Kuan back to the home of a squad leader to recover…
