Kim Duryang was a distinguished court painter of the Royal Academy of Painting (Dohwaseo), granted the sobriquet “Namri” by King Yeongjo (r. 1724–1776). This painting depicts a forest and valley in a mist under moonlight. A rush of water from the valley breaks the stillness of a night with no other apparent signs of life. The lopsided foreground, tree branches resembling the claws of a crab, and rocks painted in dense ink recall the tradition of landscape paintings executed in the Zhe School style during the mid-Joseon period. Kim also created paintings in the Southern School literati style preferred by many artists of the time. This shows that Kim differentiated his painting styles in accordance with the theme.