In terms of star rating of Tian Tian Fund Network, the software rating agencies include China Merchants Securities, Shanghai Securities and Ji 'an Jin Xin. If it is rated as five stars by these three institutions, it means that all the recent data are relatively good, indicating that this fund may be underestimated or has good growth, but it does not mean that it can be bought immediately. Investors should also look at the rating time and combine their own logical analysis to buy.