1. Xia Huanggong also known as Huang Shigong 黃石公|黄石公[Huang2 Shi2 gong1] (dates of birth and death uncertain), Daoist hermit of the Qin Dynasty 秦代[Qin2 dai4] and purported author of ”Three Strategies of Huang Shigong” 黃石公三略|黄石公三略[Huang2 Shi2 gong1 San1 lu:e4], one of the Seven Military Classics of ancient China 武經七書|武经七书[Wu3 jing1 Qi1 shu1]