 The Khitan language was in use during the Liao Dynasty (907–1125), the Kara-Khitan Khanate (1124–1218) and the Jin dynasty (1115–1234), but the last recorded Khitan speaker, Yelü Chucai, died in 1243, and the language probably became extinct soon afterwards.There are no surviving examples of printed texts in the Khitan language, and aside from five example Khitan large characters with Chinese glosses in a book on calligraphy, "Shūshǐ huìyào" (書史會要), written by Tao Zongyi (陶宗儀) in the mid 14th century, there are no Chinese glossaries or dictionaries of Khitan.The Khitan language is therefore little understood, and the two Khitan writing systems are only partially deciphered.