A股午评：创业板指跌近1%，黄金概念股集体下挫

Market Overview - The market experienced fluctuations, with the Shenzhen Component Index and ChiNext Index briefly turning positive before declining again. As of the morning close, the Shanghai Composite Index fell by 0.44%, the Shenzhen Component Index decreased by 0.81%, and the ChiNext Index dropped by 0.89% [1] Sector Performance - The deep earth economy concept continued to perform strongly, with companies like ShenKai Co. and Petrochemical Machinery achieving three consecutive trading limit increases [1] - The Hubei state-owned assets concept maintained its strength, with stocks such as Wuhan Holdings and Hubei Broadcasting advancing to two consecutive trading limit increases [1] - The controllable nuclear fusion concept saw renewed strength, with AnTai Technology and Atlantic both hitting the trading limit [1] Declining Sectors - The gold sector experienced a collective pullback, with Hunan Silver hitting the trading limit down [2] - The natural gas sector weakened, with Guo Xin Energy also hitting the trading limit down [2] Trading Volume - The total trading volume of the Shanghai and Shenzhen stock markets was 1.1 trillion yuan, a decrease of 53.5 billion yuan compared to the previous trading day [3] Individual Stock Performance - Zhongji Xuchuang had the highest trading volume, exceeding 12.8 billion yuan, followed by XinYisheng, Hanwujing, and Sanhua Intelligent Control with significant trading volumes [4]