The return of bond funds depends on the fluctuation trend of bond market. Generally speaking, when the market cuts interest rates, the bond price goes up and the income is faster.

How long you hold it depends on your investment plan. If it is used for providing for the aged, it is better to set a longer time. If you just want to make a small sum of money, China is now in the period of interest rate reduction, and 1 should have a return of about 4% in two years.