In 1259, the Song Dynasty in China further developed the use of paper money, which had been introduced earlier. This innovation took place primarily in cities like Hangzhou, where merchants began to adopt paper notes for trade, facilitating easier transactions. The introduction of paper currency revolutionized the economy and laid the groundwork for modern financial systems.

The rise of paper money influenced poets and writers who began to explore themes of wealth, commerce, and the transient nature of material possessions. Poets such as Su Shi reflected on the implications of wealth and societal changes in their works, contributing to a broader discourse on economics and morality in literature.