text: While in Northern Xinjiang the monetary system of China proper 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 were very red in colour which gave the cash coins based on the pūl coins the nickname "red cash coins".