Yin Shang v. Xu Shengzhi (Debt Recovery Case)

In this case recorded on a Han wooden slip discovered at Juyan, Yin Shang, a civilian from Guanghan County (in present-day Sichuan), submitted a formal self-accusation (zi yan) to the local authority on October 26, 60 BCE, asserting that Xu Shengzhi, a serving conscript soldier from Juyan, had borrowed money and refused to repay it. The complaint detailed the debt and invoked legal statutes to demand recovery. The fragmentary document captures the initial filing and the official acknowledgment. The case demonstrates the standard procedure for initiating a private lawsuit during the Western Han dynasty. Under the "Two-Year Statutes," debt default could be treated as a criminal offense punishable by forced labor. The preserved slip is a key piece of evidence for studying civil litigation and debt enforcement on the Han frontier, showing that even a soldier could be sued through the imperial judicial apparatus. As one of the most well-known debt cases from the Han dynasty, it provides crucial insights into the operation of law at the grassroots level.

Although the final verdict is not preserved on the extant slip, the official recording and processing of the self-accusation indicate the court accepted the petition and very likely compelled the debtor to satisfy the obligation. If the debtor defaulted, the Han code "Two-Year Statutes" prescribed punishment, potentially including penal servitude (nài wéi lì chén qiè), effectively criminalizing civil debt.

The core dispute centered on whether a valid debt existed between Yin Shang and Xu Shengzhi, the amount owed, and Xu's legal duty to repay according to Han statutory law, which criminalized the failure to repay private debts.

The case is frequently cited in the study of Han legal history as direct material evidence of how the early imperial judicial system handled private debt disputes. It illustrates the "zi yan" (self-accusation) procedure, affirming that individuals, including commoners and soldiers, could access legal remedies. It also highlights the blurring of civil and criminal law in ancient China, where debt default could attract penal sanctions, and underscores the bureaucratic sophistication of frontier administration along the Silk Road.