text: Gongsun Zan is a character in the 14th-century historical novel Romance of the Three Kingdoms, which romanticises the events before and during the Three Kingdoms period of China. He leads an elite cavalry unit called the "White Riders" and has served on the northern and eastern frontiers of the Han Empire by defending the borders from incursions by various non-Han Chinese tribes. In 191, Gongsun Zan joins the coalition against Dong Zhuo, the warlord who seized power in Luoyang and holds the figurehead Emperor Xian hostage. After the coalition breaks up, he gets into a rivalry with Yuan Shao over the territories in northern China and engages him in a series of battles throughout the 190s, starting with the Battle of Jieqiao and ending with his defeat and death at the Battle of Yijing.
  In the novel, Gongsun Zan is nicknamed "White Horse General" because the elite cavalry unit he leads is made up completely of horses of pure white. The reason for doing so is that he knows that the non-Han Chinese tribes consider white horses sacred animals so they will run away when they encounter an enemy unit riding white horses in battle.
  In Records of the Three Kingdoms
  Gongsun Zan's white horse volunteers () have a historical basis, and appear in the historical records as an elite mounted unit on white horses which formed the core of his fighting force. The Records of Three Kingdoms describes how their "flags and armour lit up Heaven and Earth" at the Battle of Jieqiao.
  In popular culture
  Gongsun Zan is one of the main playable characters of the video game Total War: Three Kingdoms, developed by Creative Assembly and published by Sega.