Biji (Chinese: 筆記) is a genre in classical Chinese literature. It roughly translates "notebook". A book of biji can contain anecdotes, quotations, random musings, philological speculations, literary criticism and indeed everything that the author deems worth recording. The genre first appeared during the Wei and Jin dynasties, and matured during the Tang Dynasty. The biji of that period of time mostly contains the believe-it-or-not kind of anecdotes, and many of them can be treated as collections of short fictions. To differentiate this kind of "biji fiction" from the general biji, the former is later called "biji xiaoshuo" (筆記小說 "notebook fictions"). Biji flourished during the Song Dynasty, and continued to flourish during the later dynasties. Famous works of biji include:
- Miscellaneous Morsels from Youyang (酉陽雜俎), by Duan Chengshi, Tang Dynasty
- Notebooks from the Mengxi Garden (夢溪筆談) by Shen Kua, Song Dynasty
- Notebooks from the Rong Study (容齋隨筆) by Hong Mai, Song Dynasty
- Little Notes on the Nature of Things (物理小識) by Fang Yizhi, Ming Dynasty
