Mr. Moon and Miss Sun = Haennim Tallim ; The Herdsman and the Weaver = Kyonu Wa ChingnyoBook - 1990
The second in the ten-part Korean Folk Tales for Children series, Mr. Moon and Miss Sun tells the story of a young boy and his sister who are trying to escape from a tiger that is pretending to be their mother. Climbing a rope that leads them to heaven, the two children end up transforming into the Sun and the Moon. Followed by The Herdsman and the Weaver, a sad story espousing the virtues of hard work, the herdsman and the weaver only being allowed to see each other once a year as punishment for their laziness.
No similar edition of this title was found at PPL.
Try searching for Mr. Moon and Miss Sun = Haennim Tallim ; The Herdsman and the Weaver = Kyonu Wa Chingnyo to see if PPL owns related versions of the work.