Group 1 - The three major indices showed mixed performance, with the Shanghai Composite Index rising while the ChiNext Index experienced a decline of over 1% at one point [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] - Over 3,500 stocks in the market declined, indicating a broader market weakness despite some sectors performing well [1] Group 2 - Resource stocks saw a collective surge, with precious metals and oil & gas sectors leading the gains; notable performers included China Gold with four consecutive trading limits and China National Offshore Oil Corporation rising over 7% to set a new historical high [1] - The disperse dye concept stocks also performed strongly, with Zhejiang Longsheng, Runtu Co., and Yabang Investment hitting their trading limits [1] - Storage chip concept stocks were active, with Puran Co. rising over 15% to reach a new historical high, and Gipai Technology hitting the 20% trading limit [1] Group 3 - In contrast, the virus prevention concept stocks collectively fell, with Zhijiang Biology dropping over 9% [1] - 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]