A股沸腾，大涨！

Market Overview - The A-share market showed slight gains with the Shanghai Composite Index up 0.25% to 3568.78 points, the Shenzhen Component Index up 0.56% to 11069.57 points, and the ChiNext Index up 0.69% to 2312.74 points [1] - The total trading volume in the Shanghai and Shenzhen markets exceeded 1.14 trillion yuan, an increase of 513 billion yuan compared to the previous trading day [3] Sector Performance - The infrastructure sector experienced a significant rally, with key sectors such as precious metals and construction leading the gains in A-shares [3] - The concept stocks related to the Yajiang Hydropower Station and water conservancy construction continued to perform strongly, with notable increases in stock prices [4][5] - Steel stocks also saw widespread gains, with companies like Xining Special Steel and Yinlong Co. hitting the daily limit [10] Notable Stocks - Yajiang Hydropower Station concept stocks surged, with Wuxin Tunnel Equipment hitting a 30% limit up for two consecutive trading days, bringing its market capitalization to over 7.4 billion yuan [5][7] - Semiconductor company SMIC saw a 3.28% increase in its stock price, leading the Hang Seng Index constituents [9] - Other notable gainers included Iron Construction Heavy Industry and Zhukang Design, both of which saw their stock prices rise by over 20% [13] Policy and Regulatory Updates - The Ministry of Human Resources and Social Security announced plans to advance national coordination of pension insurance and reform measures related to personal pension policies [14]