A股探底回升，沪指涨0.85%重返4100点，煤炭、光伏概念全线走强

Core Viewpoint - The market showed signs of recovery with the Shanghai Composite Index returning to 4100 points, while the Shenzhen Component Index turned positive after previously dropping over 1% [1] Market Performance - The Shanghai Composite Index increased by 0.85%, the Shenzhen Component Index rose by 0.21%, and the ChiNext Index fell by 0.4% [1] - The total trading volume in the Shanghai and Shenzhen markets was 2.48 trillion yuan, a decrease of 63.3 billion yuan compared to the previous trading day [1] Sector Highlights - The coal sector experienced a surge, with over ten stocks hitting the daily limit, including Shaanxi Black Cat (601015), Yanzhou Coal Mining (600188), and China Coal Energy (601898) [1] - The space photovoltaic sector saw significant gains, with Zhonglai Co., Ltd. (300393) hitting the 20% limit and Guosheng Technology (603778) achieving two consecutive limit-ups [1] - The airport and shipping sector strengthened, with China Eastern Airlines (600115) and Huaxia Airlines (002928) both reaching the daily limit [1] - The real estate sector was active, with Rong'an Real Estate (000517), Caixin Development (000838), and I Love My Home (000560) hitting the daily limit [1] - The hydrogen energy sector rapidly increased, with Beijing Capital Co., Ltd. (600860) and Zhiyuan New Energy (300985) reaching the daily limit [1] Declining Sectors - The AI application, precious metals, and computing hardware sectors experienced the largest declines [1] - The AI application sector saw a collective drop, with stocks like Yili Media (603598) and Tiandi Online (002995) hitting the daily limit down, along with significant declines in Worth Buying (300785) and Century Hengtong (301428) [1]