The book "Qing Suo Gao Yi" by Liu Fu from the Song Dynasty is valuable for various reasons: it gathers scattered writings, provides information on authors, supplements poetry notes, holds historical value, and serves as a source for novels and operas. Despite being influenced by Confucius, it has been criticized as absurd and pulp. However, the strange elements in the book are actually the inspiration for Pu Songling and paved the way for new literary arts approaches.