In the long run, the funds are always positive and growing. Short-term fluctuations or even declines are normal.

You can look at the historical performance of this fund, see how the personal risk preference of the fund management manager is, whether it meets your expectations, and whether it is optimistic about the industry prospects of the fund you bought. If there is no problem, you can safely hold it for a long time and wait quietly for it to blossom and bear fruit.