A senior Chinese official has warned that the "clock is ticking" to avoid a US default that could hurt China's interests and the global economy.
China, the US's largest creditor, is "naturally concerned about developments in the US fiscal cliff", vice finance minister Zhu Guangyao said.
Washington must agree a deal to raise its borrowing limit by 17 October, or risk being unable to pay its bills.
He asked that "the US earnestly take steps to resolve" the issue.
US Treasury Secretary Jacob Lew has said that unless Congress agrees an increase in the debt ceiling by 17 October, Washington will be left with about $30bn (£18.6bn) in cash to meet its obligations - about half the $60bn-a-day needed.