For ordinary people, bonds are a kind of "financial products that can provide value preservation and appreciation in the impression". Many elderly people will buy voucher-type government bonds at the counter of banks. However, for investors in financial markets, bond investment is a common behavior of institutional investors. The bonds traded on this exchange can also be purchased on the trading software of securities companies. It is worth mentioning that bonds traded in the financial market have certain risks and are not suitable for ordinary people who "regard bonds as savings" to buy.