A fictional event in the historical novel 'Romance of the Three Kingdoms', the Oath of the Peach Garden was an event that occurred sometime in the 180s CE, where Liu Bei, Guan Yu and Zhang Fei swore an oath of fraternity to each other in a peach garden (believed to be in present-day Zhuozhou, Hebei). They became sworn brothers, binding them together in devotion and loyalty. It is an important event that paved the way for the establishment of the Shu Han, with all three men playing significant roles during the Three Kingdoms period.