Complex sentence: When Mong Ryong, a somewhat lecherous but enchantingly handsome young man appears (who appears to have fallen heads over heels in love with Chun Hyang...), Chun Hyang reluctantly accepts his help to rescue her mother, who has been captured by the Yanban.
Split into simpler sentences: When Mong Ryong, a somewhat lecherous but enchantingly handsome young man appears, and apparently have fallen heads over heels with Chun Hyang. She reluctantly accepts his help to rescue her mother, who has been captured by the Yanban.