Qianlong Tongbao
Qianlong Tongbao (traditional Chinese: 乾隆通寶; simplified Chinese: 乾隆通宝; pinyin: qián lóng tōng bǎo; Vietnamese: Càn Long Thông Bảo) is an inscription used on cash coins produced under the reign of the Qianlong Emperor of the Qing dynasty. Initially the Qianlong Tongbao cash coins were equal to its predecessors in their weight and quality but as expensive military expenditures such as the Ten Great Campaigns began to take their financial toll on the government of the Qing dynasty the quality of these cash coins started to steadily decrease.