Zhao Zhiyi’s “Bazi Zhenjian”

Dongbo Layman’s “Bazi Zhenjian” Boyuantang Four-Pillar Numerology Classics Page 344

Zhang Zhenjia’s Collection of Hexagrams and Cases of Qimen Dunjia

A Collection of Zhang Zhenjia’s Qimen Dunjia Hexagrams

Maoshan Zhenzhenjiao (ancient version) electronic version in two volumes