A-share midday review: Shanghai index rises 0.49% in half a day, bulk commodity sectors such as metals and oil and gas resources are surging.

In early trading, the three major A-share indexes showed mixed performance, with the Shanghai Composite Index up 0.49%, the Shenzhen Component Index up 0.09%, the ChiNext Index down 0.37%, and the CSI 50 Index up 0.05% by noon. The total transaction value of Shanghai, Shenzhen, and Hong Kong markets reached 1.93 trillion yuan in the morning session, with an increase of 40.2 billion yuan compared to the previous day. Over 3500 stocks in the entire market fell. In terms of sector performance, the top gaining sectors included gold, non-ferrous metals, oil and natural gas, chemical industry, coal, agriculture, real estate, securities, port and shipping, high-speed copper cables, and cloud computing. The top losing sectors included photovoltaic equipment, biological vaccines, lithography equipment, military equipment, education, and PEEK materials concept stocks. On the market, the international gold price surpassed $5200, leading to another surge in gold and non-ferrous metal sectors, with silver hitting seven consecutive daily limit ups and China Gold with four. On Tuesday, oil prices rose, driving the oil and natural gas sector to strengthen, with CNOOC rising over 7% to a new high and PetroChina and Sinopec also posting decent gains. Google Cloud officially announced a price increase for cloud computing services, boosting the cloud computing sector and resulting in a trading limit for Meiliyun. Additionally, the chemical, semiconductor, and grain stocks performed well. On the other hand, most photovoltaic equipment stocks saw a pullback, with Oppeo Leading the decline. The biological vaccine sector continued its adjustment, with Zhijiang Biology and Yongshun Biology leading the decline.