Silver was used for large purchases, while copper was used for smaller purchases. The Chinese government minted massive numbers of coins, especially in the [[Song Dynasty]], in such large amounts that they came to be widely used throughout the region, and survive in great numbers today, going back even as far as the Han Dynasty. | Silver was used for large purchases, while copper was used for smaller purchases. The Chinese government minted massive numbers of coins, especially in the [[Song Dynasty]], in such large amounts that they came to be widely used throughout the region, and survive in great numbers today, going back even as far as the Han Dynasty. |