Ca bảy chữ mô tả tam viên nhị thập bát tú và tinh quan, là “khẩu quyết” nhận sao cổ điển. Bản thông dụng trong Thông chí·Thiên văn lược; từng chỉ truyền Linh đài.
Ứng dụng: Học nhận sao, lập tinh đồ cổ; nền cho chiêm tinh và lịch tượng.
一題隋道士丹元子，一題唐王希明撰，以七言韻歌記全天星官。首創（或定型）「三垣二十八宿」共三十一天區劃分，述約二百八十三星官、千餘恆星方位；《通志·天文略》譽「句中有圖，言下見象，或豐或約，無餘無失」。東方起角宿：「南北兩星正直懸，中有平道上天田……」便於口誦認星，是欽天監與民間觀星的入門口訣，與《開元占經》之占辭互補——一主認星結構，一主占驗文獻。
⚡ Ứng dụng: 學習傳統三垣二十八宿認星、復原古代星官與天文教學口訣。
🔗 Liên quan: 開元占經；觀象玩占；靈憲
The sky is cognitively unmasterable as raw sensory chaos; only a sung, spatial mnemonic can compress the celestial map into memory and thus into usable knowledge. The text proves that accurate astronomy (and by extension astrology) depends first on fixed nomenclature and path, not on metaphysical speculation.
1) Memorize BaZi’s fixed grids (sixty jiazi, twelve stages, ten gods) as a ‘step song’ before free interpretation. 2) Walk charts in fixed order: day master → structure → luck cycles → annual/monthly layers. 3) Teach students with mnemonic sequences, not floating keywords. 4) In cultivation timing, align practice windows to learned celestial periods rather than improvisation.
Unlike 观象玩占, which argues from omen-to-meaning, 步天歌 argues from map-to-memory. It is not a fortune manual but infrastructure for any later judgment; without it, 观象 and star-based BaZi timing lack a common coordinate system.