Oath of the Peach Garden

The Oath of Peach Garden was an oath by which Liu bei, Zhang Fei, and Guan Yu became sworn brothers amid peach blossom trees.

They sayed "We were born on seprate days,but let us die at the same day, same time and same place". Guan Yu and Zhang Fei were both outlaws and were scorned by everyone, so Liu Bei took them brothers.