net fund value, fund report and research.

1. Each fund has a net value, which represents the total value of fund assets minus liabilities divided by the fund share. The net value is updated every day. You can check the changes of the fund's net value through the official website of the fund company, financial information website or investment platform. If the net value rises, it indicates that the fund is profitable, and if the net value falls, it indicates that there may be losses.

2. Read the fund's annual and quarterly reports and research reports to understand the fund's performance, investment strategy and market outlook. Reports usually provide analysis and comments on the fund's past performance and future trends.