Lü Buwei
Lü Kai was from Buwei County (不韋縣), Yongchang Commandery (永昌郡), which is located northeast of present-day Baoshan, Yunnan. He was allegedly from the same clan as Lü Buwei, a statesman of the Qin state in the Warring States period who was exiled to the Shu region (present-day Sichuan) after his fall from power.