BAZI KNOWLEDGE BASE
Jia-Shen Xun Void: Wu and Wei (午未) — Ten Jiazi and Examples
The Jia-Shen xun contains ten Jiazi from 甲申 through 癸巳. Its Void pair is Wu and Wei (午未). The ten stems are exhausted without assigning one to 午 or 未, so every complete Day Pillar (the two-symbol column for the birth day) in this xun returns those two branches.
Which ten Jiazi belong to the Jia-Shen xun?
The table advances one stem and one branch at a time until 癸巳. Find the complete reference Day Pillar here before reading 午未 Void. A lone 甲 stem or 申 branch does not establish membership in this xun.
| Position | Complete Jiazi | Stem | Branch |
|---|---|---|---|
| 1 | 甲申 | 甲 | 申 |
| 2 | 乙酉 | 乙 | 酉 |
| 3 | 丙戌 | 丙 | 戌 |
| 4 | 丁亥 | 丁 | 亥 |
| 5 | 戊子 | 戊 | 子 |
| 6 | 己丑 | 己 | 丑 |
| 7 | 庚寅 | 庚 | 寅 |
| 8 | 辛卯 | 辛 | 卯 |
| 9 | 壬辰 | 壬 | 辰 |
| 10 | 癸巳 | 癸 | 巳 |
Why are Wu and Wei the omitted pair?
The Jia-Shen xun uses these ten branches: 申, 酉, 戌, 亥, 子, 丑, 寅, 卯, 辰, 巳. Removing them from the twelve-branch set leaves only 午 and 未. They are unassigned inside this block, not deleted from an actual chart.
Xun on this page means ten Jiazi pairs; when applied to days it is a ten-day block. It is not a ten-year Luck Pillar (a pair of symbols used to interpret a roughly ten-year period). Jia-Shen xun Void cannot be read as an empty decade ahead.
Example: how does Day 丙戌 test 午未 Void?
丙戌 is the third member of this xun. Record “Day 丙戌 → Jia-Shen xun → 午未 Void,” then inspect actual Year, Month and Hour Branches. 午 matches, 未 matches, and 申 is not part of this Void pair.
If the reference changes to 甲午, use the Jia-Wu xun instead; its pair is 辰巳. Do not retain 午未 and append the new pair as one combined result.
| Reference Jiazi | Tested branch | Result |
|---|---|---|
| 丙戌 | 午 | 午 matches |
| 丙戌 | 未 | 未 matches |
| 丙戌 | 申 | No match |
| 甲午 | 辰 巳 | Different xun: Jia-Wu |
What remains when Wu and Wei are marked Void?
No. If 午 or 未 is the Month Branch, it retains its actual seasonal and Month-Command role. Fire, Earth and their hidden stems continue to participate; Void is a separate reference label. If 午 or 未 actually appears in the chart, retain its pillar position and direct relations beside the Void label.
| Void branch | Ordinary phase | Common hidden stems | Handling |
|---|---|---|---|
| 午 | Fire | 丁 己 | Retain phase, hidden stems, roots and contacts |
| 未 | Earth | 己 丁 乙 | Retain phase, hidden stems, roots and contacts |
Does 午未 Void cancel Month Command or Fire and Earth?
No. If 午 or 未 is the Month Branch, it retains its actual seasonal and Month-Command role. Fire, Earth and their hidden stems continue to participate; Void is a separate reference label. The Jia-Shen calculation establishes only the relative 午未 pair. It diagnoses no health condition, predicts no lifespan, erases no relative and guarantees no wealth result.
Filling, clash and combination can be checked under a named school, but they do not alter membership in 甲申 through 癸巳. Every temporary relation needs its position and duration rather than a permanent-release claim.
Continue reading
- Complete six-xun Void table
Return these ten pairs to the full sixty-Jiazi cycle.
- Filling through temporary appearance
See which records change when a Void branch arrives.
- Six common Void errors
Check reference, xun, actual matches and interpretation limits.