After the Manchu conquest of the Dzungar Khanate pūl coins were offered by the Qing government to be exchanged for ”Red Cash” at a ratio of 2 pūl for 1 cash, but after 1762 the exchange was altered to 1:1. Under the Qing dynasty pūl coins continued to be produced until 1745, and the Manchus stopped pulling them out of circulation to cast “Red Cash” in 1768. Small amounts of pūl coins returned to the market during the Dungan Revolt (1862–77).