Mei Hua Yi Shu — The Heart-Mind Yi (梅花易數：心即是易)
Mei Hua Yi Shu (梅花易數), Plum Blossom Numerology, is a sophisticated system of spontaneous hexagram derivation traditionally attributed to the Northern Song Dynasty polymath Shao Yong (邵雍, 1011–1077 CE). Unlike other Yi Jing divination systems that follow fixed casting procedures, Mei Hua operates on the principle that the heart-mind IS the Yi — 心即是易. The universe constantly communicates its patterns through spontaneous phenomena; the trained practitioner learns to recognise and decode these messages.
The Famous Plum Blossom Incident (觀梅占)
The incident that gave the system its name is recorded in the Mei Hua Yi Shu text itself. In winter, during the Wei hour (未時, 1:00–3:00 PM), Shao Yong was sitting quietly in his garden admiring the plum blossoms. Suddenly, two sparrows (麻雀) fought over a plum blossom branch, both falling to the ground. Shao Yong recognised this as a meaningful sign (有感 Yǒu Gǎn) — the cosmos revealing a pattern through spontaneous phenomena — and derived a hexagram:
- Year (辰年) = 5; Month (12th) = 12; Day (17th) = 17; Hour (未時) = 8
- Upper Trigram: (5+12+17) = 34 ÷ 8 = remainder 2 → 兑 (Dui / Lake)
- Lower Trigram: (34+8) = 42 ÷ 8 = remainder 2 → 兑 (Dui / Lake)
- Moving Line: 42 ÷ 6 = remainder 6 → 6th line moves
- Original Hexagram: 兑為澤 (Dui Wei Ze, Hexagram 58, The Joyous)
- Transformed Hexagram: 澤水困 (Ze Shui Kun, Hexagram 47, Oppression)
He predicted that the next evening a young girl would come to pick plum blossoms and would be injured in the thigh by a gardener. The prediction came true: a girl climbed the garden wall to steal plum blossoms, was discovered by the gardener, fell in fright, and injured her leg. Analysis: Dui represents a young girl (少女). Kun indicates difficulty and entrapment. The Hu Gua (互卦, Interlocking Hexagram) contains Xun (巽), which corresponds to the thigh (股). Metal (Dui is Metal) overcome by the environment suggested physical injury.
The Ti-Yong Framework (體用)
This is the central interpretive engine of Mei Hua Yi Shu and what distinguishes it from all other Yi Jing divination methods.
- Ti Gua (體卦, Body Hexagram): The trigram that does NOT contain the moving line. It represents the subject, the self, the questioner, the stable element — what endures.
- Yong Gua (用卦, Function Hexagram): The trigram that CONTAINS the moving line. It represents the situation, the environment, the other party, the active influence — what changes.
Identification Rule: If the moving line is in lines 1, 2, or 3 (the lower trigram), then the lower trigram = Yong and the upper trigram = Ti. If the moving line is in lines 4, 5, or 6 (the upper trigram), then the upper trigram = Yong and the lower trigram = Ti.
Five Element Dynamics Between Ti and Yong
The outcome is judged by the Five Element relationship between Ti (self/questioner) and Yong (situation/environment):
- Yong produces Ti (用生體): Very Favourable — support and effortless benefit flowing toward the questioner
- Ti and Yong same element (體用比和): Favourable — harmony, cooperation, and balance
- Ti overcomes Yong (體克用): Generally Favourable — success through effort and control
- Ti produces Yong (體生用): Unfavourable — energy drain and loss of resources from the questioner
- Yong overcomes Ti (用克體): Very Unfavourable — oppression, danger, and failure threatening the questioner
The Xian Tian Ba Gua Number System (先天八卦數)
Mei Hua uses the Earlier Heaven (先天) trigram number assignments rather than the Later Heaven sequence used in Feng Shui:
- 乾 (Qian/Heaven) = 1 (Metal); 兑 (Dui/Lake) = 2 (Metal); 离 (Li/Fire) = 3 (Fire); 震 (Zhen/Thunder) = 4 (Wood)
- 巽 (Xun/Wind) = 5 (Wood); 坎 (Kan/Water) = 6 (Water); 艮 (Gen/Mountain) = 7 (Earth); 坤 (Kun/Earth) = 8 (Earth)
Mnemonic: 乾一兑二离三震，巽五坎六艮七坤 (Qian one, Dui two, Li three, Zhen; Xun five, Kan six, Gen seven, Kun). Note: Zhen = 4 is implied.
The Wai Ying — External Responses (外應)
Advanced practitioners prioritise Wai Ying (外應) — environmental signs occurring simultaneously with the divination. A child's laughter, a sudden gust of wind, a passing animal, or an overheard word can confirm or modify the mathematical hexagram reading. In Mei Hua philosophy, the whole environment is part of the oracle. The universe speaks in simultaneous patterns; the diviner's art is to read them holistically.
The Cultivation Prerequisite — Xu Jing (虛靜)
The system demands that the practitioner cultivate a state of Xu Jing (虛靜) — receptive stillness and mental emptiness. Without this inner preparation, the heart-mind cannot accurately perceive the cosmic signal. This is not merely a technical instruction but a statement of the system's philosophical foundation: the diviner's consciousness must be clear enough to function as an undistorted mirror of Heaven-Earth patterns. This links Mei Hua directly to the cultivation traditions of Chinese spiritual practice.