The configuration sits at the Siblings–Friends axis (兄僕線), with the directly opposite Siblings (兄弟宮) read as part of the same axis. Tian Yue is one of the six classical auxiliary stars (輔星) that condition every chart configuration; it’s Yin Fire in element, paired classically with Tian Kui (天魁), and activates strongly in night charts (chart-holders born during night hours). The Friends palace classically governs friends / subordinates / network / employees.
Classical phrasing for Tian Yue in this register: 天鉞與天魁同論, 但夜間更顯 — ‘Tian Yue is read alongside Tian Kui but expresses more clearly in night charts’. The general practitioner reading: configurations where help arrives behind the scenes, family-level support, quieter networks. Specifically in the Friends palace, the auxiliary-star register of private mentorship interacts with the palace’s friends / subordinates / network / employees domain — supporting it (when the chart structure aligns) or testing it (when it doesn’t).
Textbook reading: friend networks and chosen-family circles tend to embody private mentorship; the chart-holder is well-resourced socially. Tian Yue as an auxiliary star tends to lift this configuration when the chart structure is sound; when killing stars share or oppose the palace, the lift can be partial. The reading shifts noticeably when the chart-holder enters a 10-year luck phase that re-activates the Friends palace.
For the synthesis itself. Reading Tian Yue in the Friends palace at practitioner level requires: (1) which Main Stars share the palace and which sit in the opposing Siblings (兄弟宮); (2) which other auxiliary or killing stars share the palace (especially the partner star, Tian Kui (天魁)); (3) whether any of the Four Transformations (四化) activate the Main Stars in this palace for the chart-holder’s day stem; (4) day-vs-night chart distinction; (5) the active 10-year and annual luck cycles re-shaping the palace. This is the synthesis the Zi Wei Dou Shu Masterclass teaches in depth. To check whether this configuration applies to your specific chart, plot it free at the ZWDS calculator.