It is better to buy a bond fund at one time, and there is no need for fixed investment, because fixed investment is suitable for funds with large fluctuations, such as stock funds, hybrid funds, index funds and ETF-linked funds. , the fixed investment takes the average cost and income.

Bond funds are funds that mainly invest in bonds (the investment ratio shall not be less than 80%), with relatively stable returns and low risks, which are suitable for cautious investors.