At present, there are secondary market data in the market, and the representative is Great Wisdom. The split transaction is called time-sharing transaction, which is actually the "split transaction details" we see on the general analysis software F 1, but it is different from the transaction details provided by the secondary market data. Because the minute data is compound mixed data, the last transaction direction 1 is used to indicate the transaction direction during this period (3 seconds or 5 seconds). At present, the detailed transaction data in the market are all split transactions. Some so-called secondary transaction details are actually split transactions, that is, the 3-second data displayed in the small window on the right side of the secondary market software is still split transactions (time-sharing), rather than the transaction transactions displayed on the left side of the secondary market software. Because the transactions shown on the left can't be saved in the secondary market software and can't be exported for secondary development, only the transactions in the small window on the right can be exported.