According to "A Brief History of Coins in China", copper coins of the Qing Dynasty were minted in Xuan Tong in the year of Xuantongyuan (1909). In the third year of Xuantong in Qing Dynasty (19 1 1), Tianjin Mint General Factory minted coins. In September of the second year of Xuantong (19 10), the Ministry of Finance decided to establish a "monetary system example" and changed the name of the monetary unit to "yuan", with money as the standard, the main currency as one yuan and the treasury bill as seven yuan and twenty cents. In addition, there are three kinds of coins of five cents, twenty cents and ten cents, and four kinds of copper coins of five cents and two cents, one cent, five cents and one cent as tokens. ? In the third year of Xuantong, Tianjin Coin Separation General Factory began to cast new copper coins with two cents, one cent, five cents and one cent, and also cast new copper coins with twenty crosses, crosses, five characters, two characters and one word, among which twenty crosses, crosses and red and white coins were cast. There is only one kind of copper in Wu Wen, and copper coins in Wen Er and Wen Yi are divided into two types according to the number of holes: perforated and non-perforated (full-perforated). There are not many coins of this copper coin. With the outbreak of the Revolution of 1911 and the demise of the Qing Dynasty, the number of coins is limited, and it is rare to survive. Therefore, Xuan Tong has never started casting copper coins for two years.