Yang Metal (庚) born in Spring (春) means the chart-holder’s day pillar — the central axis of any BaZi reading — is set against the seasonal context of Wood dominance. The Spring season covers the lunar months 寅 (Tiger), 卯 (Rabbit), 辰 (Dragon), anchored by the solar terms Lichun to Lixia (roughly Feb–early May). In Five Phases terms, Wood’s prevailing energy through these months interacts with Yang Metal’s Metal element in a specific dynamic, and that dynamic is what determines what the chart needs to balance — the useful god (用神).
Classical reading: 丁 (Yin Fire) to refine as primary useful god, with 甲 (Yang Wood) for Metal to act on; supportive Earth as secondary. The standard practitioner caveat: 春庚弱, 需火煉 — ‘spring Geng is weak, needs Fire to refine’. Avoid: compounding Wood without Fire to mediate, weakened Metal conditions.
Yang Metal born in Spring is the unrefined sword in Wood’s season — the chart-holder is in a season that depletes their natural register. Yin Fire as useful god refines the Metal into actually-usable form; Wood supplies the object the Metal acts on.
This is the seasonal layer only. Real useful-god analysis examines the FULL chart, not just Day Master × season. A practitioner-grade reading factors in the structure (格局) of the chart, the strength rating of the Day Master (旺衰), the prevailing element across all four pillars, the hidden stems in the month branch (月令藏干), the role of each pillar (year, month, day, hour), and any classical configurations the chart contains. Two Yang Metal charts both born in Spring can need different useful gods because of how their other pillars stack. Use this page as orientation for what to look at first; for an actual useful-god reading of your specific chart, book a consultation — or learn the full method in the BaZi Bootcamp.