What Is Essence and Function (Ti Yong)?
Ti Yong (Essence and Function) is the core philosophical framework of Blind School (Mang Pai) destiny analysis. "Ti" represents the cards you hold; "Yong" represents how you play them.
- Ti (Essence): Day Master + Bi Jian (Peer) + Jie Cai (Rival) + Zheng Yin (Direct Seal) + Pian Yin (Indirect Seal) — your own energy, siblings and friends, benefactors and protection. These are "what you possess."
- Yong (Function): Zheng Guan (Direct Officer) + Qi Sha (Seven Killings) + Zheng Cai (Direct Wealth) + Pian Cai (Indirect Wealth) + Shi Shen (Output God) + Shang Guan (Hurting Officer) — the targets you aim to acquire, your opponents, wealth, and expression. These are "what you set out to accomplish."
The Ti-Yong relationship answers the Blind School's most fundamental question: With the cards you hold, what can you achieve?
The Essence of Ti: One's Own Camp
The scope of Ti is not limited to the Day Master alone, but encompasses the entire "Seal-Peer collective" — Seals generate you, Peers assist you:
| Ti Member | Role | Blind School Understanding |
|---|---|---|
| Day Master | Core | You yourself |
| Bi Jian / Jie Cai | Limbs | Your same-element forces, executive ability |
| Zheng Yin / Pian Yin | Backing | Your knowledge, benefactors, protection |
Assessing Ti's strength is similar to assessing Day Master strength, but places greater emphasis on "whether Seals and Peers have formed collective momentum" — when Seals and Peers cluster together, Ti is strong; when they are isolated and scattered, Ti is weak.
The Essence of Yong: Work Production Targets
Yong consists of the targets you aim to "restrain, drain, control, and unite with." The Blind School defines the scope of Yong as Wealth, Officer, and Output:
| Yong Member | Role | Work Production Method |
|---|---|---|
| Zheng Cai / Pian Cai | Wealth | Ti restrains Wealth = earning money |
| Zheng Guan / Qi Sha | Power | Ti controls/unites with Killing = gaining authority |
| Shi Shen / Shang Guan | Output | Ti generates Output = expression and creation |
Four States of the Ti-Yong Relationship
| Ti-Yong Relationship | Chart State | Work Production Assessment |
|---|---|---|
| Strong Ti, Strong Yong | Seals and Peers cluster + Wealth and Officer potent | Highest structure; capable of great achievements |
| Weak Ti, Strong Yong | Seals and Peers thin + Wealth and Officer strong | Needs Luck Cycle to support the Day Master; achievement arrives during favorable cycles |
| Strong Ti, Weak Yong | Seals and Peers strong + Wealth and Officer insubstantial | Full of strength but nowhere to apply it |
| Weak Ti, Weak Yong | Seals and Peers weak + Wealth and Officer also weak | Lowest structure; difficult to achieve greatness |
Ti Yong and Work Production Pathways
The Ti-Yong relationship is the prerequisite for work production efficiency. Strong Ti + Strong Yong → pathways are unobstructed, efficiency is high; Weak Ti + Weak Yong → unable to produce work, low structure. The first step in Blind School destiny assessment is always to evaluate whether Ti and Yong are well-matched — Ti must be strong enough to bear Yong; if Ti is insufficient, it must rely on Luck Cycles for support.