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Market Overview - The market experienced fluctuations today, with the Shanghai Composite Index briefly turning positive before declining again [1] - The sectors that saw the most gains included dairy, insurance, retail, and precious metals, while sectors such as CPO, film and television, and semiconductors faced the largest declines [1] - By the end of trading, the CSI A500 Index fell by 0.7%, the CSI 300 Index decreased by 0.6%, the ChiNext Index dropped by 1.8%, and the STAR Market 50 Index declined by 2.2% [1] - The Hang Seng China Enterprises Index also saw a decline of 1.8% [1] Index Performance - The CSI 300 Index, which consists of 300 large-cap stocks from the Shanghai and Shenzhen markets, recorded a decrease of 0.6% with a rolling P/E ratio of 13.9 times [3] - The CSI A500 Index, comprising 500 stocks with good liquidity across various industries, fell by 0.7% and has a rolling P/E ratio of 16.5 times [3] - The ChiNext Index, made up of 100 large-cap stocks in emerging industries, experienced a decline of 1.8% with a rolling P/E ratio of 40.7 times [4] - The STAR Market 50 Index, which includes 50 large-cap stocks in the "hard technology" sector, did not provide specific performance data in the excerpt [5] - The Hang Seng China Enterprises Index, tracking 50 large-cap Chinese companies listed in Hong Kong, decreased by 1.8% with a rolling P/E ratio of 10.6 times [6]