Career
He also held a military position in the court. Perhaps his best-known work is a silk scroll entitled Gangsan mujindo (Streams and Mountains Without End. Hangul: 강산무진도; hanja: 江山無盡圖), which is displayed in the National Museum of of Korea in Seoul.
In 1968, the American composer Alan Hovhaness (who had visited South of Korea in 1963) composed a chamber symphony inspired by Yi"s painting, entitled Mountains and Rivers Without End.