Market Performance - The A-share market showed mixed results on December 4, with the Shanghai Composite Index down by 0.06% to 3875.39 points, while the Shenzhen Component Index rose by 0.40% to 13006.72 points, and the ChiNext Index increased by 1.01% to 3067.48 points [1] - The total trading volume in the Shanghai and Shenzhen markets was 1.55 trillion, a decrease of 121 billion compared to the previous day [1] - Out of 1455 stocks that rose, 3878 stocks fell, with 39 stocks hitting the daily limit up and 26 stocks hitting the daily limit down [1] Sector Performance - Leading sectors included aerospace, reducers, semiconductors, energy metals, and national defense and military industry, which saw significant gains [1] - Conversely, sectors such as prepared dishes, dairy products, seafood, food and beverage, precious metals, and retail experienced notable declines [1] Individual Stock Highlights - Stocks related to robotic actuators surged, with companies like Ruineng Technology and Junya Technology hitting the daily limit up, along with over ten other stocks [1] - In the consumer sector, there was a notable adjustment, with companies like Tongqilou and Haixin Food hitting the daily limit down [1]