Group 1 - The A-share market saw a collective rise on May 7, with the Shanghai Composite Index increasing by 0.80% to close at 3342.67 points, the Shenzhen Component Index rising by 0.22% to 10104.13 points, and the ChiNext Index up by 0.51% to 1996.51 points [1] - The trading volume in the Shanghai and Shenzhen markets reached 1.4683 trillion yuan, an increase of 132.1 billion yuan compared to the previous day [1] - The aerospace and military industry sectors showed strong performance, driven by geopolitical tensions between India and Pakistan, which positively impacted military stocks [1][2] Group 2 - Hunan Tianyan, a company specializing in engine components such as turbochargers and exhaust valves, experienced a significant stock price increase due to news of a potential restructuring with its indirect controlling shareholder, China Weaponry Equipment Group [3] - The company has made progress in the new energy vehicle sector, particularly in electronic water pumps and turbocharger electronic actuators, establishing a dual-market strategy of fluid machinery and fluid electromechanics [3] - Despite the stock price surge, the company's fundamentals are not strong, indicating that the sustainability of the price increase may be limited, and caution is advised for investors [4]