港股早评：三大指数高开，科技股集体上涨，有色金属股活跃，军工股走低

Core Viewpoint - Trump's acceptance of an invitation to visit China in April next year has positively influenced market sentiment, leading to gains in U.S. and Hong Kong stock indices [1] Group 1: Market Reactions - U.S. stock indices collectively rose overnight, with the Chinese concept index increasing by 2.82% [1] - Hong Kong's three major indices opened higher, with the Hang Seng Index up by 0.9%, the National Index up by 0.86%, and the Hang Seng Tech Index up by 1.43% [1] Group 2: Sector Performance - Major technology stocks in Hong Kong saw collective gains, with Baidu rising nearly 4%, and Xiaomi and Alibaba both increasing by nearly 3% [1] - Gold prices saw a slight increase in early Asian trading, buoyed by hopes of a Federal Reserve interest rate cut, leading to a rise in gold stocks [1] - Stocks in non-ferrous metals such as copper and aluminum also experienced upward movement [1] - Military stocks, which had seen significant gains previously, experienced a pullback, while property management and biopharmaceutical stocks showed some declines [1]