Zhao Kang, styled Shusheng, was from Nanyang (now Nanyang City, Henan Province). According to the "History of the Later Han Dynasty, Volume 43", during the reign of Emperor Huan (147-167 AD), Zhao Kang "secluded himself on Wudang Mountain, remaining calm and composed, and passed on the scriptures." Mu (I don't know who he was referring to - the editor) was fifty years old at that time and was appointed as his disciple by letter. Little is known about Zhao Kang's life story.