BAZI KNOWLEDGE BASE
What Is Well Water (井泉水) in BaZi?
Well Water is the water-class Nayin (a separate named element classification for a complete pair of chart symbols) assigned to 甲申 and 乙酉. San Ming Tong Hui pictures a cold, clear spring shared through a well, says water arises from metal and emerges through wood, and distinguishes named metals, woods, fires, earths, and waters; the image does not certify drinking-water quality, health, generosity, income, or ordinary water strength.
What does Well Water establish first?
Well Water is the Nayin name for a complete 甲申 or 乙酉 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 申 a Metal branch; 乙 remains a Wood stem and 酉 a Metal branch. Nayin Water does not overwrite those ordinary Five-Phase facts.
How can you check for Well Water?
Read each complete pillar in an already calculated chart. A pillar that is exactly 甲申 or 乙酉 has the Well Water Nayin. One matching character, a zodiac animal or a real-world object is insufficient.
| Complete Jiazi | Stem phase | Branch phase | Nayin name | Nayin phase |
|---|---|---|---|---|
| 甲申 | Wood | Metal | Well Water | Water |
| 乙酉 | Wood | Metal | Well Water | Water |
Worked example: how should a 甲申 Year Pillar be recorded?
Suppose the Year Pillar (the two-symbol column for the birth year) is 甲申. The table returns Well Water. A clear record says: Year 甲申; stem 甲 is Wood, branch 申 is Metal; Nayin is Well Water, 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 酉 only in the Day Pillar (the two-symbol column for the birth day), they do not form the same-pillar 乙酉 combination and do not create Well Water. Complete pairing comes before image interpretation.
Why does the source use the name Well Water?
San Ming Tong Hui describes a cold, clear spring that can nourish without exhaustion and a well shared by households. Its internal logic says water is born from metal and emerges through wood: named metals act as a source, while wood may function as a bucket, outlet, or shaped implement. Sand Gold, Hairpin Gold, White Wax Gold, Sword Gold, Plains Wood, Great Forest Wood, Roadside Earth, Sand Earth, Rooftop Earth, Thunder Fire, and Heavenly Fire receive different conditions. Well-Spring, Stream-Below, Great Stream, Heavenly River, and Great Sea waters cannot be collapsed into “more water is better.” Identify the exact metal source and wooden access condition. Distinguish supportive earth and fire from covering, flooding, or conflict.
What value does Well Water offer a modern reader?
Its practical value is precise lookup: 甲申 and 乙酉 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 Well Water 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.