1. banknote printing factory prints banknotes: the banknote printing factory prints banknotes according to the needs and plans of the central bank, and prints banknotes of different denominations according to a certain proportion.

2. The central bank issues paper money: the central bank issues paper money in the market and flows into the market through commercial banks and financial institutions.

3. Commercial banks circulate paper money: As the agency of the central bank, commercial banks circulate paper money to the market through ATMs, counters and online banking.

4. People use paper money: People use paper money for transactions in their daily consumption.

Generally speaking, paper money printed by the state flows to the market through central banks, commercial banks and other channels, and is finally used by ordinary people. At the same time, in the process of paper money circulation, the central bank and commercial banks will carry out various tests and screening on paper money to ensure the authenticity and quality of paper money.