Late-Han Population Collapse / 东汉末年人口崩塌

Definition

Late-Han population collapse / 东汉末年人口崩塌 is the source-scoped demographic frame Hanji 898 builds from late Eastern Han registration numbers. The episode compares a 157 CE official population figure above fifty-six million with a circa-220 official registry of 7.67 million, then uses a near-forty-eight-million gap to frame war, natural disaster, epidemic, and social disorder as compounding pressures.

Current Synthesis

The concept should not be used as a precise mortality calculation by itself. Hanji 898’s value is interpretive: huge registry decline can reflect death, displacement, household-registration collapse, unregistered populations, and lost state capacity at the same time. It links the epidemic notices of Pandemic As Historical Force to the wider political and military breakdown captured by War-Disaster Compounding.

Hanji 388-3 sharpens that caution with 葛剑雄 and 《中国人口史》. The source says the Three Kingdoms low should be corrected to roughly 23 million rather than the official 7.67 million because elite household concealment,屯田 populations outside county rolls, and uncounted minority groups distort the registry. That correction narrows the raw gap but does not erase the collapse: a fall from Eastern Han highs around 60 million to roughly 23 million still marks severe demographic and social damage.

Key Claims

• Registry counts are political and administrative records, not a simple census of everyone alive under unstable conditions.
• The late-Han population gap should be treated as evidence of institutional and social collapse as well as human death.
• Epidemic is one driver in a larger disorder field, alongside war, natural hazards, famine, displacement, and lost administrative reach.
• The source does not assign exact causal shares among war, disease, disaster, rebellion, and registration failure.
• The frame helps explain why public-health distress, frontier pressure, and court incapacity appear together in the late-Han run.
• Correcting the official Three Kingdoms trough upward changes the arithmetic but not the judgment that late Eastern Han collapse involved severe population loss.

Evidence

Raw registry collapse:

• Hanji 898 compares a 157 CE registry above fifty-six million with a circa-220 registry of 7.67 million and treats the gap as a sign of late-Han social and administrative breakdown.

Disaster and public-health field:

• Hanji 898 places earthquake, eclipse, epidemic, party-prohibition, court churn, and Xianbei pressure in the same reign field, making population collapse part of a broader disaster-and-state-capacity problem.

Corrected Three Kingdoms trough:

• Hanji 388-3 cites Ge Jianxiong’s population-history correction to say the low should be read as roughly 23 million rather than the official 7.67 million.

Registration caution:

• Hanji 388-3 identifies hidden households,屯田 registration exclusions, and uncounted minority populations as reasons official figures understate actual population.

Counterevidence & Qualifications

The concept remains source-scoped. Hanji 898 provides a raw-registry collapse frame; Hanji 388-3 provides a corrected estimate and methodological caution. Neither source assigns exact causal shares among war, disease, famine, migration, concealment, minority-population exclusion, and administrative loss.

What Changed

• Migrated the page to synthesis-v1 and added Hanji 388-3’s corrected Three Kingdoms population trough and registration-caution method.

Related Concepts

• 户口数字解读谨慎 - methodological guardrail added by Hanji 388-3.
• 王朝更替人口损耗 - broader cross-dynastic pattern in which the late-Han case appears.
• Pandemic As Historical Force - disease-pressure branch in the late-Han collapse field.
• War-Disaster Compounding - war, disaster, and social disorder frame for interpreting the population gap.
• Natural Hazard As Social Disaster - adjacent disaster-history mechanism.
• Disaster Response State Capacity - state-capacity frame for why registry and relief weakness matter.