national debt
National debt is the safest and most stable financial asset, which not only guarantees the principal but also the interest. However, if it is purchased in the secondary market, there is still market risk (that is, the risk of price fluctuation). The interest rate is the same. The difference is that registered bonds cannot be traded on the securities market. Those bought for several years should be determined according to personal needs. If they are listed government bonds, they can be transferred for cash at any time. Therefore, when considering buying for several years, we should mainly expect future interest rate changes (if it rises, we will buy short; if it falls, we will buy long); If
