He was the son of King Huanhui, whom he succeeded to the Han throne.
[1][2] In 231 BC, Han An offered Nanyang (南陽), an area around modern-day Mount Wangwu, to Qin.
In the 9th month of the same year, Qin sent Metropolitan Superintendent (内史) Teng (騰) to receive the area.
Qin then created Yingchuan Commandery from the conquered Han territory.
[1][2] In 226 BC, ex-Han nobility launched a failed rebellion, and Han An died the same year.