If you really want to invest in a fund, it is advised that you'd better hold it for medium to long term. From the current perspective, it's quite difficult to make a short-term huge profit, and basically it's impossible. Moreover, if it's an open-end fund, many fund companies will charge a relatively high redemption fee when the clients withdraw their investment within one year, so short-term investment is extremely unprofitable at present. Generally, closed-end funds are bought and sold through the stock exchange, while open-end funds...