长平仓制度 / Changping Granary System

Definition

The Changping granary system / 长平仓制度 is the public grain-reserve policy that buys grain when prices are low and sells grain when prices are high, aiming to protect farmers from cheap-grain losses, protect consumers from dear-grain hardship, and maintain reserves for scarcity.

Current Synthesis

Hanji 456-1 presents the system through 耿寿昌’s proposal under 汉宣帝. The immediate problem is double: repeated harvests depress grain prices and hurt farmers, while capital supply still depends on labor-heavy transport from Guandong. Geng first proposes buying nearer grain from several commanderies to reduce transport burdens, then proposes frontier granaries that intervene countercyclically in grain markets. The episode reads this as an ancient state attempt to combine price smoothing, famine preparation, and official supply.

Key Claims

• The policy treats low grain prices as a public problem when they damage farmer incentives and income.
• The policy treats high grain prices as a public problem when they damage ordinary consumers and famine resilience.
• The granary is countercyclical: public purchase expands when grain is cheap, and public release expands when grain is dear.
• The system links market-price intervention with physical reserves, making price stabilization and emergency supply one mechanism.
• The episode places the policy in a longer lineage including 李悝 / 李克, 范蠡, 管仲, and Han Wudi-era equalization thinking.

Evidence

Problem diagnosis:

• Hanji 456-1 says repeated bumper harvests lower grain prices and reduce farmer benefit.
• Hanji 456-1 says old capital provisioning required large annual grain shipments from east of Hangu Pass and more than sixty thousand transport laborers.

Policy mechanism:

• Hanji 456-1 says Geng Shouchang proposes buying grain from Sanfu, Hongnong, Hedong, Shangdang, Taiyuan, and other nearer areas to reduce transport burdens.
• Hanji 456-1 says he proposes frontier granaries that buy when grain is cheap and sell when grain is expensive.
• Hanji 456-1 says Xuan accepts the proposal and rewards Geng.

Lineage:

• Hanji 456-1 links the idea to a Warring States policy associated with Li Kui, similar thinking attributed to Fan Li and Guan Zi, and Han Wudi-era development through Sang Hongyang’s equalization approach.

Counterevidence & Qualifications

The source uses “长平仓” in the episode summary; this page preserves that source-facing title while noting the broader historiographical form may be 常平仓. The page does not yet settle terminology, institutional persistence, exact implementation, fiscal cost, corruption risk, or measured effectiveness. The intellectual lineage is source-scoped and should not be treated as a complete history of Chinese granary policy.

What Changed

• Created the Changping granary concept from Hanji 456-1 as a public grain reserve and price-stabilization mechanism.

Related Concepts

• 国家粮价平准 / State Grain Price Stabilization - broader concept created for the state practice of using reserves and purchases to smooth grain prices.
• Price-Signal Resource Steering / 价格信号调控物流 - related because prices trigger public buying and selling decisions.
• Commodity Price Exposure - contrast case where producers and consumers face price swings without an equivalent stabilizing reserve.
• Luxury Consumption As Economic Circulation / 奢侈消费的经济循环 - another ancient-economic-policy idea in the wiki, though focused on elite spending rather than staple-grain stabilization.