A Daoist hermit of the Qin Dynasty and purported author; known for giving a book of military strategy to 张良 zhāng​liáng, he is also called the "Old Man of the Bridge" 圯上老人 yí​shàng​lǎo​rén

The "Three Strategies of Huang Shigong", one of the Seven Military Classics of ancient China traditionally attributed to 黄石公 huáng​shí​gōng and given to 张良 zhāng​liáng