Getting Clear on the Ti Trigram and Yong Trigram
Many people receive a Plum Blossom Numerology (Meihua Yishu) reading and go straight to looking up what each trigram means individually — then find themselves more confused than when they started. The core judgment logic of Plum Blossom Numerology (Meihua Yishu) does not rest on whether a single trigram is good or bad. It rests on the relationship between the Ti (body) trigram and the Yong (function) trigram. Without understanding this, everything else is built on sand.
After casting a hexagram, you have two component trigrams: the upper trigram and the lower trigram of the primary hexagram. The Ti trigram represents "your side" — the querent. The Yong trigram represents "the other party" or "the matter itself" — the object of the querent's inquiry. In a negotiation reading, the Ti trigram is you, and the Yong trigram is the other party or the direction the matter is heading.
Which trigram is Ti and which is Yong depends on how the hexagram was cast and where the moving line falls. If the moving line is in the upper trigram, the upper trigram becomes Yong and the lower becomes Ti; if the moving line is in the lower trigram, the lower becomes Yong and the upper becomes Ti. This is the foundational rule in the Shao Yong (邵雍) system. Different lineages handle edge cases differently, but this is the mainstream approach.
What Ti Ke Yong Means
Ti Ke Yong means the Ti trigram overcomes the Yong trigram in terms of the Five Elements (Wu Xing).
The overcoming sequence: Wood overcomes Earth, Earth overcomes Water, Water overcomes Fire, Fire overcomes Metal, Metal overcomes Wood. For example, if the Ti trigram is Qian (Heavenly Father, associated with Metal) and the Yong trigram is Zhen (Thunder, associated with Wood), Metal overcomes Wood — that is Ti Ke Yong.
In a negotiation reading, Ti Ke Yong is a favorable signal for the querent. It suggests your side holds the initiative, the other party is relatively passive, and the momentum leans your way. In practical terms, this might mean the other side has more room to concede, your terms are harder for them to refuse, or you hold an informational advantage.
One common misreading deserves attention here: Ti Ke Yong does not mean the other party will simply capitulate or that the negotiation will be frictionless. The overcoming relationship describes a balance of power, not a smooth path. If the transformed hexagram or the nuclear hexagram contains factors unfavorable to the Ti trigram, the overall reading requires a more integrated view — you cannot just spot Ti Ke Yong and declare victory.
There is also one scenario worth addressing separately: when the Ti trigram is extremely strong and the Yong trigram is extremely weak. In classical thinking, overcoming taken to excess can backfire — the other party, under too much pressure, may walk away entirely or introduce an unexpected variable. I hold a reserved view on this interpretation; such extremes are uncommon in practice. But when the imbalance between Ti and Yong reaches an extreme, it is worth thinking one step further.
What Yong Ke Ti Means
Yong Ke Ti is the reverse: the Yong trigram overcomes the Ti trigram in the Five Elements (Wu Xing). For example, if the Ti trigram is Kun (Earth) and the Yong trigram is Xun (Wind/Wood), Wood overcomes Earth — that is Yong Ke Ti.
In a negotiation reading, this is an unfavorable signal for the querent. In broad terms, the other party holds the initiative, your side is under more pressure, and the advantage tilts toward them. This might mean the other party is holding a firm position, your terms are harder to get accepted, or there is key information the other side possesses that you do not.
A Yong Ke Ti reading does not mean the negotiation will necessarily fail. It is a prompt for the querent to prepare psychologically — this is likely to be harder work than expected. In practical decision-making, when this pattern appears, the traditional guidance is to observe first, gather more information, or adjust strategy rather than pushing forward aggressively.
Something beginners frequently overlook: the degree of Yong Ke Ti matters. If the Yong trigram's elemental strength is itself weak — for instance, because the season puts it in a state of rest or dormancy (Xiu Xiang, 休囚) — the overcoming force is correspondingly reduced, and the threat to the Ti trigram weakens. The layer of seasonal strength and weakness is critically important in actual readings. Looking at trigram relationships without considering the time of year will skew your conclusions.
The Ti-Yong Relationship Is Not the Whole Picture
The Ti-Yong overcoming and generation relationship is the skeleton of a Plum Blossom Numerology (Meihua Yishu) reading — but it is not the whole body.
In a negotiation reading, beyond whether it is Ti Ke Yong or Yong Ke Ti, you also need to examine:
- The transformed hexagram (Bian Gua, 变卦): The hexagram produced by the moving line changing. The Bian Gua represents where things ultimately end up. Sometimes the primary hexagram shows Ti Ke Yong but the Bian Gua reverses the picture — a strong opening does not guarantee a strong finish.
- The nuclear hexagram (Hu Gua, 互卦): Lines 2-3-4 form the lower nuclear trigram; lines 3-4-5 form the upper nuclear trigram. The nuclear hexagram represents the middle phase of the matter — in a negotiation, what happens during the deliberation stage.
- The interaction of the hexagram's Five Elements (Wu Xing) with the day and month: The day's Heavenly Stems and Earthly Branches and the month's building star (Yue Jian, 月建) directly affect the strength of each line. When the Ti trigram is supported by the day and month, Ti is strong; when the Yong trigram is supported, Yong is strong. This layer functions as a calibration, adjusting the initial conclusions you drew from the overcoming relationship alone.
There is also a point that often gets confused in practice: some people mix up Ti Sheng Yong with Ti Ke Yong. Ti Sheng Yong means the Ti trigram generates the Yong trigram — for example, Ti associated with Wood generating Yong associated with Fire. This means your side is nurturing or conceding to the other party. It is not the same as holding the initiative. In a negotiation reading, if Ti Sheng Yong appears, ask yourself whether your side is the one proactively offering goodwill or making concessions.
Plum Blossom Numerology (Meihua Yishu) judgment builds in layers. The Ti-Yong overcoming and generation relationship is the first step — and the most important one. Get this layer solid before adding in the nuclear hexagram, the transformed hexagram, and the day-month interaction, and your thinking will stay clear rather than tangled.
Articles in this column are for cultural and educational purposes only and do not constitute life advice.