If it is a closed-end fund, generally speaking, you can't buy it, you can only buy it when the fund is open. Secondly, it should be noted that new funds generally have a closed period. If your favorite fund belongs to a new fund during the closed period, you can buy it after it is closed.
But generally speaking, the risk of new funds is relatively high, because there is no past fund performance for reference. If you are a novice, it is recommended to consider more old funds. Although the introduction of new funds is very good, it lacks some reference indicators. If a novice doesn't understand the fund, it is easier to choose the wrong fund.
Secondly, if you want to buy a closed-end fund, you'd better have a plan for your own funds, because closed-end funds will have a closed period and can only be redeemed when they expire or open. If you encounter an emergency, your fund is closed and there is no way to take it out in advance. There is generally no exchange button.
Therefore, it is necessary to plan your own funds, such as preparing a reserve fund in advance, so that even if there is an emergency, it will be supported by the reserve fund first, otherwise it will be very anxious if you can't get the money in an emergency.