早盘必读丨美股三大指数涨跌不一，大型科技股涨跌不一，热门中概股多数上涨

Group 1 - The US stock market showed mixed results with major tech stocks fluctuating, while popular Chinese concept stocks mostly rose, suggesting a strategy of buying on dips [2] - The Shanghai Composite Index reached a ten-year high, with significant trading volume, indicating a bullish market sentiment and opportunities for active participation [2] - The focus on the ChiNext and STAR Market reflects a trend towards high volatility stocks, which are seen as the fastest route to profit in the current bull market [2] Group 2 - A significant breakthrough in star-ground communication technology was achieved by a Chinese research team, doubling the transmission rate to 4200 Mbps using dual-channel X-band [3] - The micro-short drama industry is rapidly expanding, with over 2300 vertical screen micro-short drama crews received in the first seven months of the year, surpassing the total for 2024 [4] - The global DRAM market reached a historical quarterly high of $32.101 billion in Q2 2025, driven by AI demand and rising prices for traditional DDR4/LPDDR4X [5] - China's manned lunar exploration program made a significant milestone with the successful ignition test of the Long March 10 series rocket, following previous successful tests [6] - The launch of multiple models by Zhiyuan Robotics aims to enhance online sales channels and broaden brand coverage, with products set to be available on major e-commerce platforms [8]