元代 

 Poetry： 《cycle of songs in a traditional opera》    Read works of Bei Luoyushi at 诗海

　　Mongolian, the first such road for the mountains north of Liaoyang Mongol million. Nobusuke three years (1316) for the week of the king and emperor in the world, and Ning Wang tract north of Marco Polo as the royal doctor closed, open government grant instrument with three Division Code quadruple Old Guard. Wang beam to the world soon and most die suddenly, Polo was forced to resign. The song as "resign" is a portrayal of his personal experience. Later, because the case involved Pizhu locked. See something, "Yuan History" Volume 14 "master of literature of this century."