Principle Taught on the Day of Test Run 

  One day in November 2015 a test run of a newly-built subway train took place in the presence of the respected Comrade Kim Jong Un.
A month before Kim Jong Un had seen the train built by the Kim Jong Thae Electric Locomotive Complex and promised that he would try it when it was on a test run. He had said that he had the subway train of our style built without fail not to teach in words but to show in practice the people infected with the proclivity to imports the principle that the things we make with our own efforts and technology is more valuable.
Now he came to the site of test run at around midnight.
While guiding the test run, Kim Jong Un said that we should make the things we need with our own efforts, technology and resources, emphasizing that the conviction that ours is the best and self-development is the best should be brought home to the Workers’ Party of Korea members and other working people.
The instructions he made on the October day was a sort of lecture on the conviction that self-development is the best.