#86 1991 · China State Council (triangular-debt clearance leading group, led by Zhu Rongji) · Public finance / enterprise debt
China's state enterprises owed each other money in circular chains too tangled to settle pair by pair, so the government seeded cash at a few points and forced it to cascade through the chain instead of mediating each debt separately.
the problem
a debt problem is really a connected chain of IOUs, but each firm only ever sees its own two neighbors
background
By 1991, Chinese state-owned enterprises were caught in a nationwide web of unpaid inter-company debt known as '三角债' (triangular debt): factory A owed factory B, which owed factory C, which owed a supplier further down the same chain, in loops with no clear start or end. By some estimates the total had grown to roughly a third of the entire banking system's outstanding credit, freezing production at plants that had built and shipped goods but still couldn't get paid, because the money owed to them was itself tied up several links further down the chain.
The intuitive fix is to mediate: bring two firms together, negotiate a settlement, move to the next pair. But every pairwise settlement only worked if the firm being paid could then use that money to pay whoever it owed in turn — and with thousands of enterprises and hundreds of billions of yuan involved, no negotiator could realistically trace, let alone coordinate, every chain link at once.
what everyone would do
Mediate each debt bilaterally — bring two firms together, negotiate a settlement, move to the next pair. It fails because every pairwise settlement only works if the firm being paid can then use that cash to pay whoever it owes in turn, and with thousands of enterprises and hundreds of billions of yuan tangled together, no negotiator could realistically trace, let alone coordinate, every chain link at once.
what they saw
The clearance campaign's planners saw that the debt problem wasn't really thousands of separate disputes, it was one connected chain that no single firm could see past its own two neighbors. Instead of resolving each link individually, they could inject fresh cash at a few strategic points and attach one hard rule — pass it on quickly to pay down your own debts — letting the network untangle itself as the injected money cascaded through link after link.
the move
Rather than mediate debts one pair at a time, the clearance campaign injected bank loans directly into a handful of enterprises sitting at the start of the most tangled chains — often power plants and other capital-project owners with large unpaid construction debts — with one rule attached: the cash had to be used quickly to pay down that firm's own debts to its suppliers, who were in turn required to pass it on the same way, cascading down the chain (a power plant repaying an equipment maker, who paid a steel mill, who paid a coal mine or railway) rather than sit as working capital. Some accounts of the campaign describe firms being allowed to keep a small share, reportedly up to 10 percent, of what they collected before passing the rest along within days. A pilot in China's northeast, the region with the most tangled debt chains, ran the approach for 26 days and cleared roughly ¥12.5 billion of arrears from that single push.
why it works
Injecting bank loans into enterprises sitting at the start of the most tangled chains, with a rule requiring the cash to be used quickly to pay down that firm's own supplier debts, set off a cascade: each recipient paid its own creditor, who was required to pass the money on the same way, closing one link in the chain after another with no need for a mediator to track or coordinate any of it. Because a single injection could clear several links downstream as the cash cascaded through the chain, the campaign cleared roughly three to five yuan of debt for every yuan actually injected — proof the network was untangling itself far more efficiently than pairwise mediation ever could have, since the bottleneck was never any single firm's willingness to pay, it was that nobody had cash to start the chain moving at all.
the payoff
Over 1991 and 1992, the campaign injected roughly ¥55.5 billion of funds, most of it bank loans, and cleared approximately ¥219 billion of overdue payments nationwide — each yuan injected clearing on the order of three to five yuan of debt as it cascaded down the chain, since a single injection could close several links at once. Combined with a similar earlier round in 1990 that cleared more than ¥160 billion, the campaigns together unwound hundreds of billions of yuan of frozen inter-enterprise debt across the early 1990s.
where it breaks
The mechanism only works when debts genuinely form a connected chain that fresh liquidity can cascade through — isolated, unconnected defaults with no onward obligations gain nothing from this approach, since there's no chain for an injection to unblock. It also depends on genuine enforcement of the pass-through rule; without a credible requirement to move the cash onward quickly, a recipient firm could simply absorb the injected liquidity as working capital and the chain would stay frozen exactly where it started. And it requires identifying the right injection points — seeding cash into a firm that isn't actually near the start of a tangled chain, or into a chain that's already resolving on its own, wastes the intervention on debt that wasn't the actual bottleneck.
what came after
The 1991-92 triangular-debt clearance is remembered in Chinese economic history as one of the state's first large-scale attempts to treat a debt crisis as a network problem rather than a series of individual defaults, and the chain-repayment logic — inject at a point, force pass-through, let the network clear itself — is cited in later Chinese public-finance discussions of enterprise debt chains as the template for the difference between mediating disputes and unblocking a system.
references
- [1]三角债MBA智库百科, 2026wiki.mbalib.com
- [2]国务院办公厅转发国务院清理"三角债"领导小组关于继续组织清理"三角债"意见的通知 (1991)中华人民共和国国务院办公厅 (State Council General Office), 1991m.055110.com