The Chairman regarded this train as his office and lodging place and made a ceaseless journey of field guidance with it to visit civilians and servicepersons. In the whole period of his revolutionary career, he made 1,647 rounds of railway trips, and the total length of course he traveled by train is more than 398,000 kilometers.

He worked at the train even on holidays and birthdays.

From the first period of his revolutionary activities, he visited many units by train to inject vitality of miracles and rapid progress in the whole country. He went to leading chemical factories in the eastern coastal area at dawn and made a 400-odd kilometer-long trip by train from the eastern coastal area to the western coastal area at one night.

Thanks to his ceaseless field guidance, Juche iron, Juche fertilizer and Juche vinalon could be produced and many monumental edifices came into being. And a drive of breaking through the cutting edge was vigorously waged throughout the country.

He also visited Russia and China by train. On the running train, he worked day and night to mature his new plans for the prosperity of the country and the happiness of the people.

The whistle of the train the Chairman sounded on the road for the country and the people has been carried forward by the respected Comrade Kim Jong Un to be led to the buzzing sound of socialist construction throughout the country.