One-day tour from Dandong to North Korea

There is a direct train from Dandong to North Korea. You don't need a passport, but you need a certificate from a travel agency to prove that you have gone to North Korea. Therefore, in order to save worry and trouble, I suggest you sign up for a one-day tour of Dandong at the local travel agency after you arrive in Dandong. Let the travel agency handle a series of problems such as tickets and boat tickets.