The Four ClassicsThe four sources we cite
Every master-co-signed Mastery card we deliver carries a citation from one of these four texts. No citation, no sign-off.
1Yuan Hai Zi Ping
渊海子平
Southern Song · compiled by Xu Sheng
The foundational text of Day-Master-centred BaZi. Pattern-from-month and Day-Master-driven yongshen selection both originate here.
When we say 'the Day is principal, Year is root, Month is the headline, Hour is supporting context' — we are quoting this text directly.
2San Ming Tong Hui
三命通会
Ming · Wan Minying
The Ming-dynasty encyclopaedia of BaZi: Ten Gods, Shen Sha, palace mappings, spouse and children stars — gathered as one corpus.
The classical mapping 'for males, Officer = children, Wealth = spouse; for females, Officer = spouse, Output = children' comes from Volume Nine of this work.
3Qiong Tong Bao Jian
穷通宝鉴
Qing · compiled by Yu Chuntai, annotated by Xu Lewu
The treatise on climate balance: how the season of birth interacts with the Day Master's warmth, cold, dryness, and damp — and what favours or burdens flow.
Our first diagnostic step — climate yongshen (调候用神) — uses the seasonal pairings codified in this book (e.g. spring wood needing fire, winter water needing Bing).
4Di Tian Sui
滴天髓
Ming · attrib. Jing Tu, Qing commentary by Ren Tieqiao
Dense, terse, every line a hinge: Five-Element interactions, strength dynamics, follower-format inversions are all distilled here.
The 'follower-format yongshen inverts' rule — central to how we read 从财 / 从官杀 / 从儿 charts — is from this text's Cong Xiang Lun chapter.