春运大幕拉开，动车组整装待发——凌晨探访郑州铁路一线

Group 1 - The Spring Festival travel rush officially starts today and will last for 40 days [5] - The Zhengzhou Railway Bureau has prepared over a hundred high-speed trains for the travel peak [1] - Advanced technologies, including intelligent robots, are being utilized for the inspection and maintenance of trains [3][6] Group 2 - The Zhengzhou train depot has developed a comprehensive maintenance plan to enhance the operational efficiency of the trains [6] - A total of 155 high-speed trains of 11 different models are stationed at the depot, ensuring effective service during the Spring Festival [6] - Key components such as the running gear and high-voltage equipment on the train tops are receiving focused inspections and repairs [6]