The opening of the Secret History in the manuscript copy reproduced in the Sibu congkan (1936), the copy Gu Guangqi collated in 1805. The Mongolian is spelled in large characters, with the Ming word glosses beside each word and the small 舌 and 中 marks at the shoulders of characters; the first column gives the title 元朝秘史卷一 and the Mongolian title 忙豁侖紐察脫察安.Unknown copyist; Sibu congkan sanbian, 1936 (reprint) · Public domain · Wikimedia Commons