The Society for the Diffusion of Christian and General Knowledge Among the Chinese (S.D.C.K.) was founded in 1887 in Shanghai, China. It was founded and led by a group of American and British Methodist missionaries including Young John Allen, William Alexander Parsons Martin, Timothy Richard and Alexander Williamson (missionary). The Society endeavored to communicate Western concepts of Christianity and science among the Chinese through the translation of materials into the Chinese language. Its members also sought to prompt legal and institutional reform in China.