"Red cash coins" (; French: "Sapèques rouges"; Uyghur: قىزىل پۇل) are the cash coins produced in Xinjiang under Qing rule following the conquest of the Dzungar Khanate by the Qing dynasty in 1757. While in Northern Xinjiang the monetary system of China proper, with standard cash coins, was adopted in Southern Xinjiang where the "pūl" (ﭘول) coins of Dzungaria circulated earlier the pūl-system was continued but some of the old Dzungar pūl coins were melted down to make Qianlong Tongbao (乾隆通寶) cash coins, as pūl coins were usually around 98% copper they tended to be very red in colour which gave the cash coins based on the pūl coins the nickname "red cash coins".