Wan Zong Ziwei provides support for the three major horoscope modes of Sanhe, Feixing and Sihua. It is accurately calibrated based on classic literature and is suitable for multi-school analysis. It is compatible with Gongnong's chart and explores the use of true solar time calibration. It comprehensively covers the Xiaxin elements such as the zodiac bits, stars, and four modernities, and combines the analysis of the big limit, the fleeting small limit, and the three directions and four positives.