The easiest way is to log on to www.dcfund.com.cn, the website of Dacheng Fund Company, and click "Account Inquiry", which contains detailed fund records, including dividend records. If it is a cash dividend, the money will be directly transferred to your bank card; If you reinvest in dividends, the money will be converted into fund shares.
The amount shown in the column of "Fund Market Value" is your total assets now. Compare the principal invested at the beginning, and you will know your profit and loss.