Personally, I think that the large face value of money is mainly related to inflation. Money is like a hair. It seems that the government can change it if it says it will, but it is not, and it will affect the whole body. In addition, I think the subject's question is a bit misleading. The subject asked why the face value of the currency was not adjusted, but the question the subject wanted to solve was "It costs millions to buy a loaf of bread, why not adjust it to a few dollars?" . So your problem and the problem you want to solve are not in the same direction. If Viet Nam and other countries cancel large denomination banknotes, because inflation still exists, the price of a loaf of bread will not be reduced from several million to several dollars by adjusting the denomination of currency, but a citizen will buy a loaf of bread with millions of sacks 10 yuan banknotes.

In the economic market, everything is related to money. For example, the domestic monetary system, foreign exchange rates of various countries and so on. The face value and total amount of this issuing currency can be said to have influenced the whole world, not a whim of a certain government. When I was a second major in economics at Wuhan University, I studied a formula in macroeconomics to calculate how much money Britain had made in a certain period of time and how much the face value was the most appropriate. But because I am not engaged in related work now, I forgot, and I am really sorry for the teachers who taught me economics.