On March 19 to April 17, baotou to Zheimu between the k5336/7 times on March 20 to April 18, Zheimu to Baotou between the K5338/5 times in the tube fast passenger train 1 on March 20 to April 21 the following train resumed operation of Ulanchabu – Baotou D6767 baotou – Ulanchabu D6770 Baotou –…