地面兵装板块1月22日涨1.78%，银河电子领涨，主力资金净流入4.46亿元

Market Performance - The ground equipment sector increased by 1.78% compared to the previous trading day, with Galaxy Electronics leading the gains [1] - The Shanghai Composite Index closed at 4122.58, up 0.14%, while the Shenzhen Component Index closed at 14327.05, up 0.5% [1] Stock Performance - Galaxy Electronics (002519) closed at 8.60, with a rise of 9.97% and a trading volume of 2.629 million shares, amounting to a transaction value of 2.202 billion [1] - Other notable stocks include: - Guoke Nian Gong (688543) at 71.43, up 3.19% [1] - Beifang Navigation (600435) at 17.56, up 2.39% [1] - Tianzao Equipment (300922) at 24.63, up 2.11% [1] - Zhongbing Hongjian (000519) at 19.20, up 2.02% [1] Capital Flow - The ground equipment sector saw a net inflow of 446 million from institutional investors, while retail investors experienced a net outflow of 269 million [2] - The capital flow for key stocks includes: - Galaxy Electronics with a net inflow of 469 million from institutional investors [3] - Beifang Navigation with a net inflow of 83.02 million [3] - Zhongbing Hongjian with a net inflow of 24.69 million [3]