Meihua Yishu guide

Length and Measurement Casting

This guide explains length and measurement casting: which inputs count, how they map to a hexagram and moving line, and whether OpenFate currently supports…

System names
Meihua Yishu · Plum Blossom Divination · Plum Blossom Numerology

Catalog reference updated: · Maintained by OpenFate · Editorial Methodology

Overview

This guide explains Length and Measurement Casting without turning a textual rule or deterministic calculation into proof of prediction.

At a glance

Page scope
This guide explains length and measurement casting: which inputs count, how they map to a hexagram and moving line, and whether OpenFate currently supports the method.
Primary topic
length and measurement casting
Product support
Knowledge-only method; not implemented by the current OpenFate tool
Evidence scope
2 claim-scoped sources with an explicit locator
Reader outcome
Explain Length and Measurement Casting, reproduce its check, and identify the point where evidence ends.

Length and Measurement Casting

This guide explains length and measurement casting: which inputs count, how they map to a hexagram and moving line, and whether OpenFate currently supports the method.

Volume One distinguishes zhang–chi and chi–cun rules: the larger unit forms the upper trigram, the next unit the lower; their sum determines the line, while smaller fractions are excluded under the stated rule.

Do not silently convert historical units into modern metres and then claim the same integer inputs. Record the unit system and rounding policy; this method is knowledge-only in OpenFate.

Declare the casting method before calculating. Record the question, permitted inputs, represented instant and timezone when relevant, pre-modulo totals, remainder mapping, line order, and methodology version.

How does Length and Measurement Casting work?

Explain Length and Measurement Casting, reproduce its check, and identify the point where evidence ends.

How can you verify Length and Measurement Casting?

Reproduce Length and Measurement Casting from the recorded inputs, then label the result under the page's primary topic, “length and measurement casting.” Preserve the first reading and disconfirming evidence before revising it.

What does Length and Measurement Casting include and exclude?

Use Length and Measurement Casting for this topic's definition, rule, reproducible check, source scope, and stopping condition. These pieces belong together because each limits how the answer should be read.

What are the limits of Length and Measurement Casting?

Use the result as a structured hypothesis. Keep observable evidence, uncertainty, and a reversible next action beside it.

What evidence supports Length and Measurement Casting?

Length and Measurement Casting cites 2 sources only for the claims each source can support. Primary transcriptions establish transmitted wording; scholarship and bibliography establish history; OpenFate code establishes current repository behavior only.

Sources and editorial basis

  1. OpenFate Meihua implementation contract
    OpenFate repository: docs/MEIHUA_SYSTEM.md; app/modules/meihua/logic/{methodology,cast,derive,trigrams,hexagrams}.tsRepository documentation and deterministic logic define the current time and two-number modes, derivations, boundaries, and methodology version. They establish repository behavior, not deployment state, historical universality, or predictive validity.
  2. 《梅花易數》卷一
    《梅花易數》卷一〈尺寸占〉A digital transcription used for the transmitted trigram numbers, modulo rules, mutual-hexagram rule, observation methods, imagery, and named examples. It is not a critical edition or empirical validation.
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