The Travels of Marco Polo — Volume 1 by Marco Polo and da Pisa Rusticiano

detached from native rule, and subject to foreign dynasties; first to the _Khitan_, a people from the basin of the Sungari River, and supposed (but doubtfully) to have been akin to the Tunguses, whose rule subsisted for 200 years, and originated the name of KHITAI, Khata, or CATHAY, by which for nearly 1000 years China has been known to the nations of Inner Asia, and to those whose acquaintance with it was got by that channel.[4] The Khitan, whose dynasty is known in Chinese history as the _Liao_ or “Iron,” had been displaced in 1123 by the Chúrchés or Niu-chen, another race of Eastern Tartary, of the same blood as the modern Manchus, whose Emperors in their brief period of prosperity were known by the Chinese name of Tai-_Kin_, by the Mongol name of the _Altun_ Kaans, both signifying “Golden.” Already in the lifetime of Chinghiz himself the northern Provinces of China Proper, including their capital, known as Chung-tu or Yen-King, now Peking, had been wrenched from them, and the conquest of the dynasty was completed by Chinghiz’s successor Okkodai in 1234. Southern China still remained in the hands of the native dynasty of the Sung, who had their capital at the great city now well known as Hang-chau fu. Their dominion was still substantially untouched, but its subjugation was a task to which Kúblái before many years turned his attention, and which became the most prominent event of his reign. [Sidenote: India, and Indo-China.]