Fund management scale and scale ranking: By understanding the current and previous years' scale and ranking changes, it can reflect whether the investment ability and return ability of the fund company are improving or declining; Whether all types of funds are complete: for example, whether it covers index funds, stock funds, mixed funds, bond funds, currency funds, and even capital preservation funds, closed funds and QDII funds. The more complete the category, the broader the research field of the fund company and the stronger its comprehensive investment ability. Whether the performance of its funds is at the upper-middle level in the past two or three years. It is very rare to be able to stay above the average level for two or three years. Of course, there are others, such as service level, preferential rates, investor education, etc. You can learn more about them when you have time.