The Bretton Woods system is a financial exchange standard based on dollar and gold. Its essence is to establish an international monetary system centered on the US dollar. Its basic contents include that the US dollar is linked to gold, the currencies of other countries are linked to the US dollar, and an adjustable fixed exchange rate system is implemented. At the end of 65438+1960s, the United States further expanded its war of aggression against Vietnam, the balance of payments further deteriorated, and the dollar crisis broke out again. In the first half of March 1968, the outflow of US gold reserves exceeded $654,380.4 billion. /kloc-in March of 0/4, the trading volume of the London gold market reached a record figure of 350-400 tons. The United States is unable to maintain the official price of gold. After consulting with members of the gold vault, it was announced that gold would no longer be supplied to the market at the official price of $35 per ounce, and the market price of gold floated freely. The Bretton Woods system collapsed at 1973, and gold has soared since then, until the current 1720 USD/oz. In the long run, gold is undoubtedly due to the upward trend, because currency issuance needs the gold reserves of the national central bank as the foundation. Under the current circumstances, the speed of currency issuance is much faster than the growth rate of gold reserves of central banks in various countries, and all gold is still due to the upward trend.