Trade resources for local currencies, tie prices to gold or rare metals, trade only your own securities on the market, make the currency freely convertible
If Beijing wants to make the yuan the world's reserve currency, then it will have to first go for financial liberalization. In theory, the dollar can also be replaced by a system that is not based on a specific national currency. In this case, gold or cryptocurrencies can become a universal means of payment.

If investors begin to massively get rid of dollar assets and return the American currency to their homeland, this will provoke a surge in inflation in the United States and a potential debt crisis. The problems of the USA will spread to the financial markets, which are still dependent on the dollar, and will cause a new round of the global economic crisis.
Is collapse inevitable? Can the Ukrainian crisis deprive the dollar of its reserve currency status?
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A speculator does not break the law and pays taxes
If you remove the stock market mechanisms, you'll have to think about giving something in return. And officials don't like to work. Moreover, taxes come from the stock market.

The justification of the stock exchange is a very good mechanism in terms of fairness. Money flows there from the foolish to the smart, from the greedy to the moderate, from the cowardly to the resilient, from the nervous to the patient.
What is the use of the exchange. Part Two
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On November 24, 2021, South Africa reported the identification of a new COVID-19 variant, B.1.1.529, to the World Health Organization (WHO). B.1.1.529 was first detected in specimens collected on November 11, 2021 in Botswana and on November 14, 2021 in South Africa.

Currently no
The yuan is not a freely convertible currency. It can only buy Chinese goods.

The PRC is the world leader in the production of most industrial goods. This is facilitated by the weak exchange rate of the yuan against the dollar. If the yuan becomes the world's reserve currency, it will strengthen against the dollar, which means that China's industry will lose its competitive advantages.
Can the yuan replace the dollar?
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