At 12:00 am on July 1, the national railway officially implemented its train timetable for the third quarter. After an adjustment, several existing EMU trains, including those from Qinghe Railway Station to Datongnan Railway Station, Qinghe Railway Station to Zhangjiakou Railway Station, Beijingbei Railway Station to Zhangjiakou Railway Station, have been upgraded to high-speed EMU trains.
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