His train was like an office room and lodging quarter in which he made ceaseless field guidance to the people. He boarded the train 1 647 times to cover a total of at least 398,000 kilometers in the whole period of his life.

In Juche 98 (2009) alone, he gave field guidance to more than 200 units ranging from the Hungnam Fertilizer Complex, the Rakwon General Machine Enterprise, Wonsan, the Kim Chaek Iron and Steel Complex to the Ranam Coal-mining Machine Complex and the Musan Mining Complex.

When officials earnestly requested him that he should take care of his health, not working so hard, he said that he was accustomed to the train life and felt as if he had come home when he got on a train, but had come to a hotel when he got home.

Juche 100 (2011) was a continuation of his train journey from January of the bitterest cold in several decades through the rainy season and mid-summer season to December, last month of the year.

He always kept the people in his mind and devoted his passion and sentiments to the people. Even in the last moments of his life he took a warm measure to supply fish to the citizens of the capital before getting on the train.

Indeed, his revolutionary career was a noble one of devotion to the country and the people.