午评：沪指半日涨0.49% 资源股集体爆发

Market Overview - The three major indices showed mixed performance, with the Shanghai Composite Index experiencing fluctuations and the ChiNext Index opening high but later declining by over 1% [1] - The total trading volume in the Shanghai and Shenzhen markets reached 1.91 trillion yuan, an increase of 39.3 billion yuan compared to the previous trading day [1] - Overall, more than 3,500 stocks in the market declined, indicating a bearish sentiment [1] Sector Performance - Resource stocks saw a collective surge, particularly in precious metals and oil and gas sectors, with notable performances from China Gold (600916) achieving four consecutive gains, Hunan Gold (002155) with three consecutive gains, and Sichuan Gold (001337) recording six gains in ten days [1] - China National Offshore Oil Corporation (600938) rose over 7%, reaching a historical high, while PetroChina Oilfield Services (600871) and Zhun Oil (002207) hit the daily limit [1] - The disperse dye concept stocks also performed well, with Zhejiang Longsheng (600352), Runtu Co. (002440), and Yabang (603188) hitting the daily limit [1] - The storage chip concept showed active performance, with Puran (not specified) rising over 15% to reach a historical high, and Qipai Technology hitting the daily limit [1] Declining Stocks - The virus prevention concept stocks collectively fell, with Zhijiang Biology experiencing a decline of over 9% [1] Index Closing - At the close, the Shanghai Composite Index rose by 0.49%, the Shenzhen Component Index increased by 0.09%, while the ChiNext Index fell by 0.37% [1]