Paper cash started from promissory notes named "jiaozi" in seventh century China. Jiaozi didn't supplant metallic money, and were utilized close by the copper coins. The succeeding Yuan Dynasty was the principal government to involve paper money as the transcendent coursing medium. In the later course of the administration, confronting monstrous deficiencies of specie to finance war and keep up with their standard, they started printing paper cash without limitations, bringing about excessive inflation