Use when the user asks for Yuan, 元, Great Origin, 玄学, 算命, 命理, 八字, 称骨, 紫微斗数, 数字命理, western astrology, Vedic astrology, or a combined destiny reading. First collect name/gender, birth date/time, birthplace, and calendar type; then use the runnable reference methods under references, render either a conservative synthesis or a direct reading, and support a five-year fortune window centered on the current year.
Structured Chinese Chenggu (“bone weight”) fortune analysis for 称骨算命 / 袁天罡称骨 tasks. Use when the user wants a deterministic lookup + structured output pipeline from birth datetime or normalized lunar components.
Compute symbolic numerology from a person's name and birthdate using deterministic mappings only. Use for numerology / 数字命理 / 生命路径数 / 姓名映射 requests and structured numerology JSON. Do not use for predictive fortune-telling or non-symbolic advice.
使用传统吠陀占星（Vedic astrology）流程“星盘 → Nakshatra → Vimshottari Dasha”分析出生信息，输出只含“业力”和“阶段”的结构化 JSON。Use when a user asks for Vedic astrology, Nakshatra, Janma Nakshatra, Dasha, Vimshottari, karmic themes, or life-stage interpretation from birth data. Do not use for Western astrology-only requests or for scientific proof claims.
Compute and interpret a Western tropical natal chart (birth chart / natal chart / 本命盘 / 星盘) from birth datetime and location. Use for requests about planets, signs, houses, aspects, or outputs grouped into personality, career, and relationships. Skip Vedic or sidereal unless explicitly requested, tarot, horary, Chinese astrology, daily horoscopes, or astronomy-only questions unrelated to a natal chart.
Perform structured Ziwei Dou Shu (紫微斗数 / Zi Wei Dou Shu) system design, chart interpretation, and implementation planning. Use when the user asks to build a Ziwei skill or engine, define palaces/stars/four-transformations/limits, interpret an existing chart JSON/table, or produce deterministic-vs-heuristic output. Do not use for birth-data-only personal readings unless verified chart facts or a deterministic chart engine are available.