The fixed investment of the fund can be stopped at any time, but the long-term investment of the fund is meaningful. Without a specific investment period, ordinary investors can get expected returns, so they can stop the fixed investment of the fund and take profits. The stop of the fund's fixed investment needs to be set at non-trading time.

Funds mainly invest in the stock market, and the stock market is short and long, so it is more likely to get returns and expected returns from holding funds for a long time. Investors are generally advised to invest for a long time.