The Chinese government has built what is now the world's second-largest economy in part by keeping its currency cheap in order to subsidize exports. To do that, it has bought gobs of U.S. Treasury bills and other securities. Any big move on China's part to unload its $1.2-trillion-plus trove of American debt would only result in a self-inflicted wound: sinking the value of the dollar further and eroding the value of its own reserves.
For the moment, at least, the economic and political consequences of dumping dollars are likely to keep Beijing from taking any such drastic action.
"There really isn't a better choice than U.S. Treasury bonds," wrote Huang Yiping, professor of economics at Beijing's Peking University, in a commentary published Monday in the influential financial magazine Caixin. "The basic requirements for foreign reserves are safety, stability in value and liquidity. Although U.S. Treasury bonds might not meet the first two criteria right now, the problem is still that we do not have a better choice."
U.S. Debt Downgrade Leaves China in a Bind
At Los Angeles Times: