Researcher and politician.

A Southern Song Dynasty scholar, studied under Huang Gan, specialized in classical studies, focused on the integration of knowledge and practice, established Shidong Academy, authored works such as 'Lectures on the Five Classics' and 'Records of the Analects and Mencius'.

a Korean literati of the Ming Dynasty, known by the courtesy name Ruwei and the pseudonym Songyan, author of 'Songyan Collection'.