The Jin dynasty, the Great Jin, ruled north eastern China 1115 to 1234. Its name is sometimes written as Kin, Jurchen Jin or Jinn to differentiate it from an earlier Chinese dynasty with the same name. Its rulers were Jurchen. After vanquishing the Liao, the Jin launched an over one hundred-year struggle against the Song dynasty, in southern China. Over the course of their rule, the Jurchens of Jin adapted to Chinese customs. They fortified the Great Wall but the Mongols invaded under Genghis Khan in 1211 and inflicted catastrophic defeats. The Jin seemed to suffer a never-ending wave of defeats, revolts, defections, and coups, but proved tenacious. The Jin finally succumbed to Mongol conquest 23 years later in 1234. |  |