It has often been claimed that the Dai Nihon shi is one of the towering monuments of traditional Japanese historiography, and it is indeed a work of rare scope: a general history of Japan in 397 kan, or chapters, dealing primarily with the affairs of the imperial dynasty from its legendary founding in 660 B.C. to the healing of Japan's only extended dynastic schism in 1392. The entire text is in literary Chinese, and the pattern of organization is that of the Chinese dynastic histories. The Dai Nihon shi was conceived by Tokugawa Mitsukuni (1628–1701), the second daimyo of the Mito han, and compiled by the Confucian retainers of Mitsukuni and his successors. Two large sections of chronological Main Annals and Biographies (approximately half of the finished book) were completed by 1715, but the rest remained unfinished at the time of the Meiji Restoration.