沪指跌近1%，科创50跌超2%，AI硬件股集体下跌、寒武纪跌超7%，国债上涨，商品下跌

Market Overview - A-shares experienced a downward trend with all three major indices declining, the Shanghai Composite Index falling below 3800 points, and the ChiNext Index dropping over 1% after previously rising more than 1.5% [1] - The Hong Kong market also saw fluctuations, with the Hang Seng Index and Hang Seng Tech Index both turning negative [2][3] - In the bond market, government bond futures continued to rise, with the 30-year main contract increasing by 0.3% [1][4] Sector Performance - The new energy industry chain, including power batteries, lithium batteries, and energy storage, remained active, while AI hardware stocks such as CPO and GPU collectively declined [1][10] - Domestic commodity futures continued their downward trend, with coking coal dropping nearly 3% and other commodities like aluminum and glass also experiencing declines [1][5] Notable Stocks - In the AI hardware sector, stocks like Zhongji Xuchuang, Tianfu Communication, and Xinyi Sheng all fell over 10% [10][11] - Conversely, in the power battery sector, stocks such as Tianhong Lithium Battery surged, with a notable increase of 30% [10][11] - Solid-state battery concepts saw significant gains, with stocks like Dongfang Zirconium and Tianji Co. both hitting the daily limit [10][11] Bond Market Activity - Government bond futures opened higher across the board, with the 30-year main contract rising by 0.36% [12][13] - The central bank conducted a reverse repurchase operation of 212.6 billion yuan at a fixed rate, with a net withdrawal of 203.5 billion yuan for the day [13]