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Tang cash / guan accounting: research record

Evidence coverage: AD 780–AD 805. This is the span of collected observations, not the currency’s lifetime.

This record includes associated currencies and earlier interpretations. The article selects the evidence relevant to its own history.

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Currency continuity

Tang cash / guan accounting

CUR-V29-TANG-CASH · Research draft
One scoped currency identity. Changes to subdivisions, scale, standard, instruments or issuers do not by themselves create children. A distinct account unit can remain a successor.
Dated observations: AD 780–AD 805; this does not establish the entire lifetime.

Parents / predecessors

No distinct predecessor currency is established in the loaded view.

Children / successors

No distinct successor currency is established in the loaded view.

Latest research

Earlier account evidence

A reported780 price comparison values a bolt of plain silk at4000 cash and a dou of rice at200 cash. These show money-denominated prices; context does not warrant universal purchasing-power estimates.

Sources and qualifications →
Earlier account evidence

Lu Zhi’s memorial against the twice-yearly tax describes conversion of different property categories into strings of money for assessment. This directly establishes fiscal account valuation independently of settlement material.

Sources and qualifications →
Unit-of-account identity review

Scoped Tang monetary accounting in cash and strings: fiscal valuation and prices, not a separate node for each coin inscription. No claim yet about continuity from earlier dynasties or into every Song region.

Sources and qualifications →
Japanese account boundaries

The museum distinguishes Chinese coin models, medieval one-coin/one-mon reckoning, and independent Edo gold, silver and copper values. This does not by itself establish Tang-account to Japanese-mon ancestry or merge mon, ryō and silver monme.

Sources and qualifications →
Qin-to-Tang frontier

Qin cash obligations establish an earlier Chinese account witness. The reviewed ordinance does not establish the intervening account continuity through Han and Sui to the Tang profile.

Sources and qualifications →

Account-unit observations

Dated evidence, not exact birth or extinction dates.

780supported

A reported780 price comparison values a bolt of plain silk at4000 cash and a dou of rice at200 cash. These show money-denominated prices; context does not warrant universal purchasing-power estimates.

C1815
780–805supported

Lu Zhi’s memorial against the twice-yearly tax describes conversion of different property categories into strings of money for assessment. This directly establishes fiscal account valuation independently of settlement material.

C1816
Evidence & research notes 5 claims

Dated observations, not a proven complete lifespan.

Supported C1815

A reported780 price comparison values a bolt of plain silk at4000 cash and a dou of rice at200 cash. These show money-denominated prices; context does not warrant universal purchasing-power estimates.

Angela Sheng · Determining the Value of Textiles in the Tang Dynasty (2013) Citation S954 · Open source ↗

p189

Source access and limitations

Not a complete origin, lifespan or current-status audit.

Supported C1816

Lu Zhi’s memorial against the twice-yearly tax describes conversion of different property categories into strings of money for assessment. This directly establishes fiscal account valuation independently of settlement material.

Yang Yan / Lu Zhi; translated in de Bary and Bloom, Sources of Chinese Tradition · Tang Debate on the Twice-a-Year Tax Citation S953 · Open source ↗

pp6–8, especially p7

Source access and limitations

Not a complete origin, lifespan or current-status audit.

Later historical transmission and modern translation, not original manuscript.

Supported C1854

Scoped Tang monetary accounting in cash and strings: fiscal valuation and prices, not a separate node for each coin inscription. No claim yet about continuity from earlier dynasties or into every Song region.

Yang Yan / Lu Zhi; translated in de Bary and Bloom, Sources of Chinese Tradition · Tang Debate on the Twice-a-Year Tax Citation S953 · Open source ↗

See scoped account observations.

Source access and limitations

Not a complete origin, lifespan or current-status audit.

Later historical transmission and modern translation, not original manuscript.

Angela Sheng · Determining the Value of Textiles in the Tang Dynasty (2013) Citation S954 · Open source ↗

See scoped account observations.

Source access and limitations

Not a complete origin, lifespan or current-status audit.

Thomas J. Mazanec · Literary Debts in Tang China: On the Exchange of Money, Merit, and Meter (2023) Citation S955 · Open source ↗

See scoped account observations.

Source access and limitations

Not a complete origin, lifespan or current-status audit.

Qualified C2015

The museum distinguishes Chinese coin models, medieval one-coin/one-mon reckoning, and independent Edo gold, silver and copper values. This does not by itself establish Tang-account to Japanese-mon ancestry or merge mon, ryō and silver monme.

Bank of Japan Currency Museum · Historical events and currencies in use Citation S1047 · Open source ↗

Ancient/medieval sections and independent Edo gold, silver and copper accounts

Source access and limitations

Not a complete origin, lifespan or current-status audit.

Qualified C2016

Qin cash obligations establish an earlier Chinese account witness. The reviewed ordinance does not establish the intervening account continuity through Han and Sui to the Tang profile.

Chun Fung Tong · The Emergence of Logistics Networks and Financial Administration During the Qin Conquest (230–221 BC), Early China 48, 133–162; online 2026 Citation S1048 · Open source ↗

Emerging Logistics Networks and New Financial Administration; cash ordinance and notes 106–111

Source access and limitations

Not a complete origin, lifespan or current-status audit.

Publisher full text, translated excavated ordinance and dating discussion inspected; original slips not inspected.

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