A drought-resistant, fast-ripening rice variety originating from the Champa Kingdom in present-day Vietnam. Its quick maturation allowed for multiple harvests in a single growing season. As tribute, it was introduced to China during the Song Dynasty, where its characteristics significantly impacted agricultural production.
The rapid growth cycle and hardiness of this agricultural innovation facilitated increased food production and supported population growth, particularly in regions where traditional rice cultivation methods were less effective. Its adaptability to diverse environments contributed to its widespread adoption and influence on dietary habits across different societies. The cultivation of this grain helped transform marginal lands into productive agricultural areas, expanding the potential for surplus production.