春运火车票已售1.4亿张，全国铁路连续5天发送人数超千万人次

Group 1 - The core point of the news is that the national railway is experiencing a significant increase in passenger traffic during the Spring Festival travel season, with 13.8 million passengers expected to be sent on February 7 and a total of 1.4 billion tickets sold for the Spring Festival period [1][2] - On February 6, the railway sent 12.845 million passengers, marking the fifth consecutive day of over 10 million passengers being transported, indicating a strong demand for rail travel [1] - The ticket sales for February 21 have started, and popular departure cities include Beijing, Guangzhou, Shanghai, and Shenzhen, while major arrival cities also include Beijing and Guangzhou [1] Group 2 - There are still available tickets for various routes from February 8 to 9, including routes from Xi'an, Hohhot, and Baotou to Beijing, and from Shanghai to Nanchang and other cities [1] - From February 16 to 21, there are sufficient tickets available for routes such as Beijing to Shanghai and Chongqing to Chengdu, indicating a well-managed supply to meet passenger demand [2] - The railway departments are closely monitoring passenger flow and dynamically analyzing data from the railway ticketing system to ensure adequate service and capacity during the peak travel period [2]