The economy of the Song Dynasty has always been a focal point of fiscal history research, and it inherited and influenced the monetary systems of the Tang and Yuan Dynasties. The "coexistence of silver and paper currency" system during the Jin and Yuan dynasties was a product influenced by the Song Dynasty's monetary system. Studying its potential role in promoting the development of the history of the Song, Liao, Jin, and Yuan dynasties is of great significance. This paper will be divided into four parts: 1. Review of history and academic history; 2. Manifestation of the "coexistence of silver and paper currency" during the Jin and Yuan dynasties; 3. Evolution and origins of the "coexistence of silver and paper currency"; 4. Core connotation and crisis of the "coexistence of silver and paper currency".
Li Zun'ao (Wed,) studied this question.