Xinhua News Agency, May 26, China Securities Index Co., Ltd. issued an announcement that, according to the index rules and deliberated by the Index expert Committee, CSI Index Co., Ltd. decided to adjust the CSI 300, CSI 500, CSI 1000 and other index samples, which will take effect after the market closes on June 9, 2023. Among them, 9 samples were replaced by the CSI 300 Index, Jingke Energy and CNPC Capital were transferred into the index, 50 samples were replaced by the CSI 500 Index, Shengxin LiNeng and Shengmei Shanghai Index were transferred into the Index, and the CSI 1000 Index was replaced with 100 samples. Anjing Food, Huaxia Ophthalmology, etc. In addition to the above index, the samples of other indexes will also be adjusted accordingly. In terms of valuation, based on the closing price on May 24, the adjusted rolling price-to-earnings ratios of CSI 300,CSI 500 and CSI 1000 are 11.80,19.04 and 24.53 times, respectively.