受寒潮天气影响，部分列车晚点、停运

Group 1 - The article highlights the impact of a cold wave in the central and eastern regions of China, causing delays and cancellations of passenger trains on the Jingguang and Jinghu lines managed by the Beijing Railway Bureau [1] - The railway department advises travelers to check the China Railway 12306 website or station announcements for updates and to plan their trips accordingly [1] - Passengers who have purchased tickets for canceled trains can apply for refunds without incurring fees within 30 days from the date of travel, starting from the ticket's departure date [1]