I have encountered this problem before. Generally, long-term historical handicap data cannot be reproduced in futures software, and neither Boyi nor Wenhua can. Later, I found stock software, and many of them have this function. Now many stock softwares have futures quotes. You can use stock softwares. Ruxin and Straight Flush both support browsing historical handicap data. Take Tong Daxin as an example. Click Enter on the K line of the historical day to display the details of the historical handicap corresponding to that day.

If you need long-term historical handicap data, this is minute-by-minute transaction point data, which can also be purchased. For example, Weishang provided the historical minute data of commodity futures for more than ten years in txt format. They can provide not only the first file, but also the fifth file data of the big business office and CICC.