Yun has studied children’s stories in the “Class for children’s books authors,” and debuted when she got noticed in [Children and Literature]. Her books include [No more worries! The Koala Hair Salon](1&2), [I’m also a snail], [Like a chestnut], [We are secret friends], [Revenge-flavored macarons], [TV ghost and Sofa ghost], and [Princesses poop, too].