Female, the biological daughter of Mr. and Mrs. Yun who was swapped at birth and raised in the countryside. She has just been brought back to the Yun family. She is described as wild, lacking manners, and manipulative. She sits with legs crossed, eats casually, and uses emotional tactics like threatening to leave to control her parents. She is in stark contrast to Yun Shu who was obedient and well-behaved.