China - Early Imperial. YUAN: Da Yuan, 1310-1311, AE 10 cash (19.21g), H-19.46, ta üen tong baw in Mongol Phags-pa script (da yuan tong bao in Chinese), Fine. Külüg Khan (Da Yuan), born Khayishan, meaning wall in Mongolian, was an Emperor of the Yuan Dynasty, and is regarded as the seventh Great Khan of the Mongols in Mongolia. His name means warrior Khan or fine horse Khan in the Mongolian language.