Purchase of bearer bonds: bearer bonds are mainly purchased by various institutional investors and individual investors. Buying bearer physical bonds is the simplest. Investors can sell bearer bonds in major banks (including China Industrial and Commercial Bank, China Agricultural Bank, China Construction Bank, Bank of Communications, etc.). ) during the issuance period. Purchase of certificate-based government bonds: Certificate-based government bonds are mainly issued to individual investors. Its sale and redemption are handled through major bank savings outlets, postal savings department outlets and treasury bond service department of the financial department. Buy book-entry treasury bonds: Book-entry treasury bonds can be bought and sold at the counter of securities companies and pilot commercial banks. Pilot commercial banks include China Industrial and Commercial Bank, China Agricultural Bank, China Bank, China Construction Bank, China Merchants Bank and Bank of Beijing.