地面兵装板块10月13日涨5.36%，北方长龙领涨，主力资金净流入3.34亿元

Core Insights - The ground equipment sector experienced a significant increase of 5.36% on October 13, with North China Long Dragon leading the gains [1] - The Shanghai Composite Index closed at 3889.5, down 0.19%, while the Shenzhen Component Index closed at 13231.47, down 0.93% [1] Stock Performance - North China Long Dragon (301357) saw a closing price of 158.18, with a remarkable increase of 19.58% and a trading volume of 131,100 shares, amounting to a transaction value of 1.925 billion [1] - Great Wall Military Industry (601606) closed at 51.92, up 10.00%, with a trading volume of 1,018,500 shares, resulting in a transaction value of 5.123 billion [1] - Jieqiang Equipment (300875) closed at 53.54, up 9.87%, with a trading volume of 182,700 shares, leading to a transaction value of 943 million [1] - Inner Mongolia First Machinery (600967) closed at 21.44, up 7.85%, with a trading volume of 1,377,000 shares, resulting in a transaction value of 2.869 billion [1] Fund Flow Analysis - The ground equipment sector saw a net inflow of 334 million from main funds, while retail investors experienced a net outflow of 330 million [1] - Great Wall Military Industry had a main fund net inflow of 172 million, while retail investors had a net outflow of 120 million [2] - Inner Mongolia First Machinery recorded a main fund net inflow of 167 million, with retail investors experiencing a net outflow of 215 million [2]