The most important thing to look at a fund is the fund company and the fund manager. Choose a large-scale fund company and a fund manager with a stable long-term and short-term performance ratio

. The ability of large funds to obtain excess returns is poor, because large funds can usually only be allocated in large-cap stocks with good liquidity < P >. From the historical experience, it is relatively more difficult to obtain excess returns beyond the large-cap stocks than funds with moderate scale < P >. However, a fund that is too small will not do either. After the scale is too small, some stocks may be over-allocated, and the performance volatility will increase. In fact, it is enough to choose a fund as long as it is not close to the liquidation bottom line of 5 million.