Market Overview - The military electronics sector experienced a decline of 0.27% on February 4, with *ST Chengchang leading the drop [1] - The Shanghai Composite Index closed at 4102.2, up 0.85%, while the Shenzhen Component Index closed at 14156.27, up 0.21% [1] Stock Performance - Notable gainers in the military electronics sector included: - Quanxin Co., Ltd. (300447) with a closing price of 21.54, up 6.69% and a trading volume of 458,300 shares, totaling 1.006 billion yuan [1] - Taimeng Technology (600590) closed at 12.39, up 6.63% with a trading volume of 1,832,500 shares, totaling 2.255 billion yuan [1] - Guoguang Electric (688776) closed at 115.09, up 4.82% with a trading volume of 43,500 shares, totaling 492 million yuan [1] Fund Flow Analysis - The military electronics sector saw a net outflow of 3.046 billion yuan from institutional investors, while retail investors contributed a net inflow of 2.105 billion yuan [2] - The top stocks by net inflow from retail investors included: - Ruichuang Micro-Nano (688002) with a net inflow of 110 million yuan [3] - Xicet Testing (301306) with a net inflow of 102 million yuan [3] - Taimeng Technology (600590) with a net inflow of approximately 89.38 million yuan [3]