Why do Shanghai mostly use one-yuan coins and Beijing mostly use one-yuan banknotes?

Any differences are nonsense. Since the 1990s, the central bank has been piloting small-denomination currency coins in several places, including Shanghai, to study related issues. Therefore, these places only issue coins, and the so-called use of coins is just an illusion. Now that it has been officially rolled out across the country, the problem itself will soon become a joke. The central bank official said that the number of coins per capita in Beijing has exceeded 100. It's just that the usage habit still exists for a while. As paper money becomes less and less, new habits will naturally form. The life of 1-yuan banknotes is too short, which is not conducive to mechanization, high cost, and low long-term neatness of the RMB. These can be solved with coinization. On the other hand, the strengthening of banking services, the use of exchange machines, and the establishment of hundreds of small-denomination and broken RMB exchange channels have greatly improved the cleanliness of RMB and promoted coinization, reducing coin precipitation. Just watch the news and you will know.