If it is a closed-end fund, the foundation will be closed after it is raised. After it is closed, investors can't buy it, and investors can't sell it in a short time. Investors must hold it until the end of the investment period of the fund before they can redeem it. After the investment period, the products will also be removed from the shelves. This period is set by the fund manager, usually two years or more.

If it is an open-end fund, it can be held indefinitely in principle, unless the company goes bankrupt and the products are taken off the shelf. Open-end funds have a long term, investors can buy and sell at any time, and can be used as long-term investment tools.