Gao Chai was born in 521 BC, 30 years younger than Confucius. He was a native of the State of Qi, and a member of the noble house of Gao.[1][3] He was said to be very ugly and dwarfish in stature, not even six chi tall (about 1.4 metres (4 ft 7 in)).[3] Confucius considered him unintelligent, but he showed great ability as a governor.[1]
Gao Chai served as a city magistrate in the State of Lu, and later accompanied Zilu, another prominent disciple of Confucius, to serve in the government of the neighbouring State of Wey.[1] In 480 BC, Prince Kuaikui plotted a coup d'etat and took over the throne of Wey. Gao urged Zilu to flee from the turmoil, but Zilu, determined to protect his lord Kong Kui, refused and was killed.[4] Gao Chai escaped to safety.[1]
When Gao Chai served as a judge in Wey, he once condemned a criminal to the punishment of having his foot cut off. When he was later fleeing the state, the same man saved his life. Confucius praised Gao's ability to administer harsh justice with benevolence, so as to prevent resentment from the people he punished.[2]