The Red Hare or Chi Tu (Chinese: 赤兔馬; pinyin: chì tù mǎ) was a famous horse owned by the warlord Lü Bu, who lived during the late Eastern Han dynasty of China.
The Red Hare was mentioned in Lü Bu's biographies in the historical texts Records of the Three Kingdoms and Book of the Later Han.
Lü Bu rode this horse in 193 during a battle in Changshan (常山; around present-day Shijiazhuang, Hebei), in which he helped another warlord Yuan Shao defeat his rival Zhang Yan.
After hearing a suggestion from his adviser Li Su, Dong Zhuo sends Li Su to present the Red Hare as a gift to Lü Bu and induce Lü Bu to betray his foster father, Ding Yuan, and defect to his side.
After Li Su convinces him to do so, he murders Ding Yuan and defects to Dong Zhuo, whom he pledges allegiance to and acknowledges as his new foster father.