The United States does not owe us national debt. We use our foreign exchange reserves - US dollars to buy US national debt, which is equivalent to lending US dollars to the United States! China's foreign exchange reserves are US$1.9 trillion. As of the end of September 2008, China's holdings of US Treasury bonds were US$585 billion. US Treasury bonds are my country's main investment type. In addition, there are real estate bonds guaranteed by the US government and some corporate bonds, totaling* **The proportion of U.S. dollar reserves in China’s total foreign exchange reserves is as high as 60%. Many Americans borrow money to buy houses, so China owns about US$1 trillion in US dollar bonds.

At the same time, the United States also holds bonds issued by China, which is the money we owe the United States. There are about 100 billion US dollars in bonds.