Yin-Wu-Xu Fire Combination

Fire begins its growth stage at Yin, reaches its peak at Wu, and enters storage at Xu. Because the three branches cover the growth, peak, and storage stages of Fire, they form the complete Yin-Wu-Xu Fire Combination.

This is one of the clearest examples of the Three Combination principle. Yin carries Wood that can generate Fire, Wu is itself a Fire branch and the peak of Fire, and Xu is the storage branch of Fire. Together they connect the full cycle from growth to strength to storage.

Wu is the peak stage of Fire and carries the most direct Fire qi of the three branches. Yin provides the beginning of Fire's growth, Xu provides storage, and Wu stands at the strongest point of the cycle.

If Wu is strongly clashed or the chart is dominated by Water, the actual strength of the Fire Combination cannot be judged from the presence of all three branches alone. If the chart is in a Fire-dominant season and receives further support from Wood or Fire, the Fire structure becomes stronger.

No. San Ming Tong Hui states that all three branches are required for the complete Three Combination. Yin-Wu and Wu-Xu can still form two-branch relationships, but they are not equivalent to a full Yin-Wu-Xu Fire Combination.

This distinction matters in chart reading: seeing two related branches is not the same as treating the entire structure as a complete Fire Combination.

When the Combination is established, Fire becomes more concentrated and influential in the chart. If Fire is useful, the structure can reinforce it. If Fire is already excessive, the Combination can increase heat, dryness, and Element imbalance.

Whether this shows through career, wealth, relationships, or another life area depends on the Ten Gods represented by Fire and the pillar positions of Yin, Wu, and Xu.