Commonly used are Sina, Sohu, and Oriental Fortune Network. I prefer to use Oriental Fortune Network (fund.eastmoney.com). The daily valuation is relatively accurate, which is not much different from the actual situation. Generally speaking, if you want to buy or sell funds, it is more appropriate at around 14:45, because there are still 15 minutes before the closing, and the valuation will not be much different from the actual price announced that day.