The main currency used in China at that time was the silver dollar. 19 14 adopts the silver standard system. People in China have no habit of using paper money. At that time, the monetary unit was silver, and both of them had to be changed into RMB. Issue silver dollar, one dollar, fifty cents, twenty cents, ten cents and five cents; There are five kinds of copper coins, namely, two cents, one cent, five cents, two cents and one cent. At the same time, the central bank issued paper money, 1 yuan, 5 yuan, 10 yuan, 50 yuan, 100 yuan, and the silver dollar and paper money could be exchanged with China Bank, the then central bank of China, and 1 yuan paper money was equal to 1 silver dollar, which was itself a temporary measure. For the sake of economic development, paper money will be abolished sooner or later and the gold standard will be implemented. Then there was a war, and nobody did it. A silver dollar can be exchanged for about 1000 pence. You have to change eight copper coins for each copper coin. After the silver dollar enters the market, it will be converted into each coin 10 cent. Different time and place may cause different conversions. About four pence for a bowl of noodles, fifteen pence for a catty of fish and forty pence for a catty of pork. In the first edition, the exchange rate between RMB and silver dollar is large, which is different in different regions. In some areas, the RMB has become the secondary currency of the silver dollar, and it can only be bought and sold under very small circumstances, which is too big for normal economic activities. The old currency 1955 before the currency reform, and the old currency 10000 yuan is equal to the new currency 1 yuan. The second edition of RMB is based on the purchasing power of 1 silver dollar. One RMB is equal to one silver dollar, which is equivalent to the current RMB in 300 yuan. We have issued a large amount of RMB in this decade.