1, the best investment opportunity for bond funds: (benchmark) interest rates increase, funds flow to the banking sector, bond prices fall, and interest rates and bond prices change inversely. 2. Bond Fund Funds that mainly invest in fixed-income financial instruments such as treasury bonds and financial bonds are called bond funds, which are also called "fixed-income funds" because the income of the products they invest in is relatively stable. According to the proportion of investment in stocks, bond funds can be divided into pure bond funds and partial debt funds. The difference between the two is that pure debt funds do not invest in stocks, while partial debt funds can invest in a small number of stocks. The advantage of the partial debt fund is that it can flexibly allocate assets according to the trend of the stock market and share the opportunities brought by the stock market while controlling risks. Generally speaking, bond funds do not charge subscription or subscription fees, and the redemption rate is also low.