In the article I wrote on the Korean 1952 TB/Christmas seal, I briefly discussed Dr. Moon’s autobiography, “A Fly Stuck to the Tail of Chollima”. As noted in the article, the Chollima is a mythical winged horse originally from Chinese classic literature and is seen across East-Asian literature.
It is often seen on North Korean stamps because according to Wikipedia: “The word Chollima can be translated as “thousand li horse,” referring to its ability to travel 1,000 li (4000 kilometres) in a single day. It also was said that it could not be ridden by any person. It is known for accomplishing the most difficult tasks and to have led heroes to victory. This idea of Chollima was used by Kim Il-sung to energize the workers in North Korea to bring the country out of the rubble of the Korean War to obtain a better life and a more prosperous country in a short amount of time.” It has now become something of symbol for North Korea and has also been used by the tourism media to promote the Chollima statue in Pyongyang.