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.

An example is Miscellaneous Morsels from Youyang

More information on the English [1], Chinese [2] and German [3] Wikipedia pages.