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A higher purchase application takes precedence over a lower purchase application, and a lower sell application takes precedence over a higher sell application.
If A is bought at a unit price of 100 yuan, and B is bought at a price of 80 yuan, it will first facilitate A transactions.
If A is sold at a unit price of 100 yuan, and B is sold at a price of 80 yuan, it will first facilitate B transactions.
2. Time priority
Application at the same price determines priority according to the time of application. It means that who makes the first application for a transaction an d it first facilitates the transaction.
For example, A proposed selling applications at 9:00, and B applied at 9:10. The system would give priority to the A transaction.