BAZI KNOWLEDGE BASE
What Is Water of the Great Stream (大溪水) in BaZi?
Water of the Great Stream is the water-class Nayin (a separate named element classification for a complete pair of chart symbols) assigned to 甲寅 and 乙卯. San Ming Tong Hui pictures a powerful east-flowing stream that needs a place of return and suitable nourishment, with exact metal, water, earth, and clash conditions; it does not predict temperament, migration, flooding, or ordinary water strength.
What does Water of the Great Stream establish first?
Water of the Great Stream is the Nayin name for a complete 甲寅 or 乙卯 pillar, and its Nayin phase is Water. It may occur in the Year, Month, Day or Hour Pillar (the two-symbol column for the birth hour). The lookup unit is always one stem–branch pair in the same pillar, never a single character or a cross-pillar combination.
This lookup establishes one historical classification. 甲 remains a Wood stem and 寅 a Wood branch; 乙 remains a Wood stem and 卯 a Wood branch. Nayin Water does not overwrite those ordinary Five-Phase facts.
How can you check for Water of the Great Stream?
Read each complete pillar in an already calculated chart. A pillar that is exactly 甲寅 or 乙卯 has the Water of the Great Stream Nayin. One matching character, a zodiac animal or a real-world object is insufficient.
| Complete Jiazi | Stem phase | Branch phase | Nayin name | Nayin phase |
|---|---|---|---|---|
| 甲寅 | Wood | Wood | Water of the Great Stream | Water |
| 乙卯 | Wood | Wood | Water of the Great Stream | Water |
Worked example: how should a 甲寅 Year Pillar be recorded?
Suppose the Year Pillar (the two-symbol column for the birth year) is 甲寅. The table returns Water of the Great Stream. A clear record says: Year 甲寅; stem 甲 is Wood, branch 寅 is Wood; Nayin is Water of the Great Stream, classed as Water. This keeps the Nayin field separate from ordinary elemental data.
If 乙 appears only in the Month Pillar (the two-symbol column for the birth month) and 卯 only in the Day Pillar (the two-symbol column for the birth day), they do not form the same-pillar 乙卯 combination and do not create Water of the Great Stream. Complete pairing comes before image interpretation.
Why does the source use the name Water of the Great Stream?
San Ming Tong Hui describes waves and a far-reaching eastward stream, then says the image needs both a place of return and nourishment. It links return to specified Kan or mountain conditions and nourishment to selected clean metals, while separating the two Jiazi and their clashes. The same passage distinguishes still, celestial, sea, and other waters; several earths are treated as obstructions, and fire and wood vary by exact pair. These details cannot be collapsed into “more metal feeds water” or “earth is always harmful.” State the exact supporting or clashing Jiazi. Keep source-specific return and nourishment rules intact.
What value does Water of the Great Stream offer a modern reader?
Its practical value is precise lookup: 甲寅 and 乙卯 share this Nayin name, which lets you locate the pair’s distinctive source image and conditions. If another pillar enters an older rule, record that full Jiazi, its location and the source before drawing a comparison.
Keep the reading order explicit: verify calendar inputs and the Four Pillars; retain stems, branches and hidden stems; evaluate Month Command and Day-Master structure; only then add Water of the Great Stream as a Nayin layer. One Nayin name does not determine strength, Useful God, personality, work, relationships, wealth, health or event timing.
Continue reading
- Complete table of the thirty Nayin
Return to the sixty-Jiazi sequence and verify neighboring pairs.
- Compare another Water Nayin: Water Under the Stream
A shared phase does not make two images or conditions interchangeable.
- Water in ordinary Five-Phase analysis
Separate Nayin classification from actual chart relations.