 A superstition involving Chinese cash coins specific based on their inscriptions are "the five emperor coins" (), this refers to a set of Chinese cash coins issued by the first five emperors of the Qing dynasty (following their conquest of China in 1644).These cash coins are believed to have the power to ensure prosperity and to give protection from evil spirits because during the reign of these five emperors China was powerful and prosperous.Furthermore, the term "Five Emperors" (五帝) also alludes to the "Three Sovereigns and Five Emperors".