Hey! You don't know that the opening time of A shares at that time was not 9: 25, but 9: 20. Therefore, the transaction will not be displayed in the transaction details during this time period. The so-called highest and lowest prices of the day are not necessarily the highest and lowest prices you see. So many investors will choose the best five-minute time period. (Note: If it is low, buy it; If it is high, sell it. )