元史
Given the many errors in the text, efforts were made during the Qing and subsequent decades to re-compile the history of the Yuan. Qian Daxin completed some treatises and tables, and Ke Shaomin, a late Qing historian, re-compiled a 257-chapter text over thirty years, completing it in 1920. Ke's recompilation, the "New History of Yuan", was given official historical status by the Republic of China in 1921, and was included as one of the Twenty-five histories.