The requirement that the profit of fixed investment is positive is that the time is long enough, otherwise the fixed investment is of little significance. If the investment in the CSI 500etf is restricted for two years, no one can guarantee the profit and loss, but if the time is long enough, the probability of positive profit is still great.
It is suggested that fixed funds should be allocated in a triangle, and several index points should be designed for reference. The higher the index, the less input and the more input. As long as the time is long enough, the possibility of positive returns is high.
Especially in the current stock market downturn, the risk of starting a fixed investment is not great.