General software, such as communication and great wisdom, can be used. General historical memory can be traced back to 3 or 5 years, so there should be no problem. Before, you need to download the data.

Great wisdom classic, double-click the K line to see the time-sharing chart of the day.

Communication, double-click the K line or lock the K line with coordinates and press Enter to see the time-sharing chart of the day.

Great Wisdom L2: Lock the K-line, press the space bar to see the time-sharing chart of the day.