View my earnings and investment portfolio details. Follow me to learn investment skills. U.S. Treasury bonds are securities issued by the U.S. government to raise fiscal funds and are one of the world's most important safe assets. Their scale has exceeded 34 trillion dollars, mainly held by domestic and foreign investors, the Federal Reserve, and foreign governments. Treasury securities are divided into short-term Treasury bills (T-Bills), medium-term notes (T-Notes), and long-term bonds (T-Bonds), with varying interest rates and maturities. U.S. Treasury bonds are considered low-risk investments, but high debt levels raise concerns about fiscal sustainability. Their yields directly affect global borrowing costs and serve as an economic barometer. Investors need to pay attention to the impact of inflation, interest rate policies, and political factors on the bond market.