Qianlima

The winged horse is said to be too swift and elegant to be mounted by any mortal man and is named after its ability to travel one thousand li in a single day.

Since the 3rd century BCE, the qianlima was used as a metaphor for exceptionally talented people and animals, such as Red Hare.

Beginning around the 3rd century BCE, Chinese classics mention Bole, a mythological horse-tamer, as an exemplar of horse judging.

Bole recognizing a qianlima was a metaphor for a wise ruler selecting talented shi "scholar-officials".

In order to expedite the construction, President Kim Il Sung devised the slogan "rush at the speed of chollima".