4 Zhu Xiaojian; Southern dynasties; Song Dynasty; Plain reverse

One interesting fact about this coin is that it was used as a form of currency during the Song Dynasty, which was a time of great economic growth and cultural achievement in China. The coin's design, with its plain reverse and inscribed obverse, was standardized across the empire, making it easily recognizable and trustworthy for merchants and traders. Despite its small weight of 0.46 grams, the coin played a significant role in facilitating trade and commerce during this period.