This article will focus on the core basis for determining the eight-character (Ba Zi) palace structure based on the lunar pillar, as well as the core logic of whether to look at the stem or the branch of the lunar pillar. It will combine the rules of fate calculation and practical experience for a simple explanation.

Whether the Lunar Pillar is Based on the Stem or the Branch

The core principle of determining the palace structure through the lunar pillar is to take the branch (the lunar term) as the fundamental framework, with the stem as an auxiliary expression. It is not solely based on one side, but rather a combination of both for judgment.

The branch (lunar term) is the "foundation" of the destiny chart, controlling the overall environment of the five elements' strength and weakness at the time of birth. Its hidden stems directly determine the basic direction of the structure.

The stem of the lunar pillar is the visible expression of the energy of the lunar term. It forms a ten-essence relationship with the day stem (such as official, kill, seal, wealth, etc.), clearly defining the specific type of structure.

For example, if the lunar branch is Wu Wood (寅木), and the stem is Jia Wood (甲木), the structure tends toward the support of the seal; if it is Bing Fire (丙火), then it forms a transformation where wood generates fire. The structure must be judged by combining both. If only the stem is considered and the branch is ignored, it would deviate from the fundamental nature of the five elements' strength and weakness. If only the branch is considered without the stem, it would fail to clarify the visible effect of the structure.

Which to Focus on in the Eight Characters: the Stem or the Branch of the Lunar Pillar

In judging the eight-character structure, the lunar branch should be the main focus, while the stem serves as a secondary factor. They cannot be neglected. The lunar branch defines the foundation of the structure, while the stem determines its visible form and the direction of its influence.

The key role of the lunar branch: The lunar branch is the "main switch" of the structure, determining the overall tone of the five elements' strength and weakness. It influences the strength of the day stem through its hidden stems. If the lunar branch supports or strengthens the day stem, the foundation of the structure becomes more stable. If it weakens the day stem, it is necessary to check whether there is a way to control or balance it. The conflicts, collisions, and interactions among the branches can directly disrupt or strengthen the structure, making them a key factor in determining the quality of the structure.

The supplementary role of the lunar stem: The lunar stem directly reveals the characteristics of the ten-essences, clarifying the core direction of the structure. For example, if the stem shows an official or kill, the structure leans toward career and power; if it shows wealth, it leans toward financial opportunities; if it shows food or injury, it leans toward talent and ability. The stem needs to have a root in the lunar branch or other earth branches to be effective. If it has no root, it becomes weak and has limited impact on the structure.

Comprehensive judgment logic: First, determine the overall strength and direction of the five elements based on the lunar branch. Then, use the stem to clarify the type of ten-essence structure. Finally, combine the relationships of generation, control, and mutual influence between the two to judge whether the structure is pure or affected by any disruption. Only in this way can we accurately identify the core of the destiny chart.

Related Q&A
Q: Does a floating stem without a root significantly affect the structure?
A: It has limited impact. If the stem has no root in the lunar branch or other earth branches, its strength is weak and it cannot dominate the structure. At this point, the focus should be on the influence of the lunar branch and its hidden stems, with the stem serving only as a reference.

Q: Can the stem still play a role if the lunar branch is clashed or attacked?
A: It can, but to a reduced extent. If the lunar branch is clashed or attacked, it undermines the foundation of the structure. Even if the stem has strength, it will be affected due to the unstable environment of the five elements. It is necessary to consider whether there are other branches or stems in the destiny chart that can neutralize or transform the clash, to determine the degree of the stem's effectiveness. 【Conclusion】When analyzing the eight-character structure, looking at the stem and branch of the lunar pillar is like observing the leaves and roots of a tree. The lunar branch is the root, the foundation, while the stem is the fruit, the visible result. The core lies in using the lunar branch to determine the strength and weakness of the elements, and the stem to reveal the ten-essence characteristics. Only by combining the two can we fully and accurately judge the structure.