铁路春运进入返程客流高峰！多地至广州深圳方向加开旅客列车

Group 1 - The core point of the article highlights the peak return passenger flow during the Spring Festival travel season, with an expected 16.8 million passengers to be sent on February 21, and a plan to add 2,052 passenger trains [1] - As of February 21, the total number of train tickets sold during the Spring Festival period exceeded 310 million [1] - Major departure cities include Beijing, Guangzhou, Chengdu, and others, while popular arrival cities include Beijing, Guangzhou, and Shanghai [1] Group 2 - From February 22 to February 23, there are sufficient tickets available for routes such as Shanghai to Xuzhou and Guangzhou to Nanning, while some routes like Beijing to Harbin still have available tickets [2] - The railway departments are actively responding to the peak return passenger flow by increasing train capacity and implementing measures to ensure safe and orderly travel for passengers [2] - Passengers are advised to pay attention to travel service information and weather changes, and to allow ample time for boarding [2]