After Emperor Yingzong ascended the throne (1436), silver has already embodied two basic functions of money, namely, value scale and circulation means. In Jiajing, it was more common to use silver. At that time, land taxes, corvee taxes, commercial taxes, salt taxes, customs duties and other taxes were all collected in silver, and the state treasury expenses were also paid in silver. In the late Ming Dynasty, silver was used not only for large transactions, but also for small businesses. At this time, silver finally squeezed out paper money, replaced copper coins, and became the main currency in circulation, forming a parallel monetary system with silver as the mainstay and copper coins as the supplement. The form of silver coins in the Ming Dynasty is still dominated by silver ingots, with the largest ingot weighing 520 and the general ingot still weighing 520, as well as various small silver ingots and broken silver. Casting place names, weights and craftsmen's names are cast on large ingots, and year numbers and place names are sometimes cast on small ingots. In addition, the Ming Dynasty also minted silver coins of different sizes, such as Yongle Bao Tong, Wanli Bao Tong, Apocalypse Bao Tong and various kinds of silver mining in Wanli period. Many silver ingots of different sizes were circulated and unearthed in the Ming Dynasty.