Heishan bandits

The Heishan bandits or Black Mountain bandits (Chinese: 黑山賊; pinyin: Hēishān zéi) was a bandit confederacy in the Taihang Mountain range during the later years of the Eastern Han dynasty in China. They played a part in the internecine feuds that followed the Eastern Han dynasty's descent into chaos preceding the Three Kingdoms period, during which they eventually surrendered to the warlord Cao Cao.