01One atlas, two star counts
Do published totals use the same counting convention?
- Observation
- The study abstract gives 1,339 stars; the IDP guide gives 1,345, a difference of six.
- Analysis
- Register each number with its source and locator. The difference is reproducible; its cause requires examination of counted objects and versions.
- Limits
- Neither total is selected as correct, and no typographical error is presumed.
02Two juan, seven volumes
Must textual divisions equal bound units?
- Observation
- The Yuding Liuren Zhizhi catalogue uses two juan and seven volumes for textual and bound divisions.
- Analysis
- Keep separate fields for juan and bound volumes and retain record 102334182. Contents across the set are needed to identify each volume's scope.
- Limits
- Catalogue fields do not replace inspection; unequal counts are not classified as an error.
03Two movements above one earth plate
Can a star and gate share one rotation?
- Observation
- At Jia-Zi, Yi-Chou and Bing-Yin in Yang 1, Tianpeng occupies 1, 9, 8; Rest occupies 1, 2, 3.
- Analysis
- Separate earth, star and gate layers to trace their initial coincidence and later separation. A single perimeter rotation cannot express these sequences.
- Limits
- Only the three cited times are reconstructed, not every school or full spirit plate.
04Three intermediate remainders
Can the result be checked through each operation?
- Observation
- 1,937,281 mod 360 = 121; 121 mod 72 = 49; 49 mod 24 = 1.
- Analysis
- Each operation retains dividend, divisor, quotient and remainder. The resulting 1 belongs to this declared reduction chain, not to an inferred modern year.
- Limits
- Epoch conversion, exclusion conventions and exact-division boundaries are not covered; this is not a date converter.
05One number, different directions
Are Taiyi and Luoshu palace numbers interchangeable?
- Observation
- The cited Taiyi numbering places 1 at Qian in the northwest; Luoshu places 1 at Kan in the north. The eight-palace circuit excludes centre 5.
- Analysis
- Carry system, direction and trigram with every number. Two diagrams with shared orientation make the displacement visible.
- Limits
- The teaching diagram is a textual reconstruction, not an excavated object or historical plate.
06Host and guest depend on context
Is the first mover always the guest?
- Observation
- Volume four makes the first mover guest in a field array and host in a settled-position scenario.
- Analysis
- Record scenario before action order and role label, keeping an isolated formula from becoming a universal definition.
- Limits
- For historical semantics and conditional analysis, not advice on real conflict.
07Xu to Song: retain Kun-earth
Which palace sets kin on a transformed line?
- Observation
- Changing Xu at lines 1, 3, 4 and 6 yields Song. Line 4 changes from Shen-metal offspring to Wu-fire parent, relative to Kun-earth throughout.
- Analysis
- The transformed figure supplies branches; kin retains the original reference. The two steps use information for distinct purposes.
- Limits
- A declared-input exercise; the chapter's diagram–prose discrepancy is separately logged. No real consultation-outcome data are claimed.
08Catalogue language and contributor era
Do a Chinese title and Qing attribution identify an edition?
- Observation
- Dalian Library record 4987 lists Japanese language and Yehe Laoren of the Qing; call number 1862-21, accession 7352.
- Analysis
- Retain the catalogue fields, separating contributor era from an unconfirmed publication year.
- Limits
- The item and page images have not been inspected; the title alone cannot justify changing the language field.