海南板块，逆势走强

Market Overview - The A-share market experienced fluctuations with the Shanghai Composite Index opening lower and declining further, while the ChiNext Index fell over 1% [1] - Market volume shrank again, with the total trading volume in Shanghai and Shenzhen reaching 1.14 trillion yuan, a decrease of 118.4 billion yuan compared to the previous trading day [1] - Over 3,800 stocks in the market declined [1] Sector Performance - The Hainan sector showed strength, with stocks like Roniu Mountain and Hainan Ruize hitting the daily limit [3] - The retail concept performed actively, with Yonghui Supermarket and Nanjing Business Travel achieving three consecutive trading limit increases [3] - The commercial aerospace sector exhibited localized strength, with Zengsheng Technology achieving three consecutive trading limit increases and Tiantong Co. achieving two consecutive trading limit increases [3] - Several popular stocks from Fujian province saw declines, with Hai Xin Food hitting the daily limit down, and Zhaobiao Co. and Hongxiang Co. experiencing significant drops [3] - Overall, the Hainan, precious metals, retail, and film and television sectors led in gains, while cultivated diamonds and photovoltaic sectors saw the largest declines [3] - By the end of the trading session, the Shanghai Composite Index fell by 0.72%, the Shenzhen Component Index decreased by 0.56%, and the ChiNext Index dropped by 1.23% [3]