1. In an efficient market, passive investment is the most effective investment, that is, index fund is the best investment choice, and its value is definitely there, because first of all, different investment varieties are needed, and secondly, index fund, as an investment product that passively tracks the index, can achieve the purpose of investing in the index.

2. There are many index funds, and almost all the important indexes in the market have corresponding index funds, which has obvious advantages, because the income of most index funds is higher than the average rate of return of stock funds or stock funds can not outperform index funds.