海南板块，涨幅居前

Market Overview - The A-share market experienced a pullback after an initial rise, with all three major indices briefly turning negative, while the ChiNext index rose over 1% during the day [1] - The total trading volume in the Shanghai and Shenzhen markets reached 1.9 trillion, an increase of 37.9 billion compared to the previous trading day [7] - Nearly 3,900 stocks in the market declined, indicating a broad market weakness [1] Sector Performance - The Hainan Free Trade Zone concept stocks showed strong performance, with Hainan Haiyao, Hainan Ruize, and Hainan Development hitting the daily limit [1] - The lithium battery sector also performed well, with Tianji Co. reaching the daily limit [1] - Liquid cooling server stocks surged in the afternoon, with Yingweike and Jitai Co. hitting the daily limit [1] - Semiconductor equipment concepts were actively traded, with Shenghui Integration and Yaxiang Integration achieving consecutive limit-ups [1] - The tungsten sector was active, with Xianglu Tungsten and Zhangyuan Tungsten both hitting the daily limit [1] - Conversely, the commercial aerospace sector saw a pullback, with Shunhao Co. and Aerospace Machinery both hitting the daily limit down [1] - The tourism sector faced declines, with Qujiang Cultural Tourism hitting the daily limit down [1][2] Index Performance - At the close, the Shanghai Composite Index rose by 0.07%, the Shenzhen Component Index increased by 0.27%, and the ChiNext Index gained 0.41% [3][4]