Tai Yin in the Siblings Palace (太陰在兄弟宮)

Sitting opposite the Friends palace (僕役宮), this configuration occupies the Siblings–Friends (兄僕線) and reads against the peer-network axis together with the inherited body: Siblings · Health · Property · Friends. Tai Yin transforms 化祿 under Ding (丁), 化權 under Wu (戊), 化科 under Gui (癸), 化忌 under Yi (乙).

Where Tai Yin sits in 兄弟宮, the register typically reads through how the chart-holder shows up for the people who stand alongside them — though the specific intensity depends heavily on supporting stars.

The textbook reading: chart-holders relate to siblings, peers, and business partners through night luminary — inward life, emotional weather, private self. Common signatures include artists, writers, family-business inheritors, property managers, mental-health practitioners. Tai Yin’s characteristic risk — private struggle that doesn’t get visible attention under Yi (乙) 化忌 — surfaces specifically through siblings, peers, and business partners when supporting conditions are absent. Pairings with Tian Tong reinforce this picture; pairings with the Four Killings (擎羊, 陀羅, 火星, 鈴星) sharing or opposing the palace can flip it.

At depth, practitioners read four additional layers beyond this baseline: which auxiliary stars (左輔, 右弼, 文昌, 文曲, 天魁, 天鉞) share or oppose the palace, whether any of the Four Killings (擎羊, 陀羅, 火星, 鈴星) sit in the same or opposing palace, whether self-transformations (自化) on adjacent palaces alter the configuration’s energy, and how the current 10-year and annual luck cycles activate or suppress what sits in the Siblings Palace and the opposing Friends Palace. Synthesising these layers across a real chart is the practitioner skill the Zi Wei Dou Shu Masterclass teaches.

The reference above describes the configuration in isolation — what tends to be true when this Main Star sits in this palace, regardless of any other factor. Real chart readings layer four additional dimensions on top: which auxiliary stars share the palace, which Four Killings sit in the palace or oppose it, which self-transformations (自化) apply to the chart-holder’s day stem, and how the current 10-year and annual luck periods activate or suppress the configuration. Synthesis across these layers is what makes a chart reading specific to one person rather than generic to a configuration.

For your own chart, plot your Zi Wei Dou Shu chart to see which auxiliary and killing stars accompany this configuration. To learn the synthesis itself, the Zi Wei Dou Shu Masterclass covers it in depth.