It is not known when Lei Man was born, but it is known that he was of non-
Han extraction, whose people lived in caves in the Wuling (武陵, in modern
Changde,
Hunan) region, in Lang Prefecture. During the time when the Tang general
Gao Pian served as the military governor of Jingnan Circuit (荊南, headquartered in modern
Jingzhou,
Hubei), which Lang Prefecture belonged to then, Lei became an officer under Gao, commanding non-Han soldiers of the region. Lei followed him to those circuits along with his non-Han soldiers. Lei's pillages appeared to briefly stop in 885, when then-military governor of Jingnan,
Chen Ru, bribed him to stop the pillages, but after Chen was overthrown by
Zhang Gui later that year, Lei appeared to continue his pillages. It was said that these pillages laid the region on the
Yangtze River to waste. In 893, Lei (who was by then referred to as full prefect of Lang), in an alliance with
Deng Chune the prefect of Shao Prefecture (邵州, in modern
Shaoyang,
Hunan), attacked
Tan Prefecture (in modern
Changsha,
Hunan), the capital of Wu'an Circuit (), killing Wu'an's military governor
Zhou Yue (who was also from the Wuling tribes) and allowing Deng to take over as the military governor of Wu'an. == As military governor ==