The biji (literally "notebook") Nenggai zhai manlu (è½æÂ¹é½Â漫é / è½æÂ¹æÂÂ漫å½Â, pinyin NénggÃÂi zhÃÂi mànlù, variously rendered Loose Records from the Studio of Possible Change, Random Notes from Able-to-Change Studio, Casual Records of the Nenggai Studio, and Recollections of the Master of Nenggai) was written by Wu Zeng (å³æÂ¾ / å´æÂ¾, fl. 1127âÂÂ1160) during the Song Dynasty. Wu Zeng was patronised by the politician Qin Hui () (1090âÂÂ1155), and the text correspondingly often glorifies Qin Hui. Published in year twenty-seven of the Shaoxing (ç´¹èÂÂ) reign of the Southern Song (1157 CE), the work originally comprised around twenty booklets ().
The current edition comprises eighteen themed juan arranged in thirteen chapters; a humorous section (huëxié tánxuè ) has been lost. Many of the themes were conventional to notebooks of the time. They include:
The text often constitutes text-critical study and contains a great deal of literary material from the Tang and Song dynasties. It is also an important source for the history of Chinese eating and drinking culture, especially the Tang and Song dynasties, and of the Pearl Temple.
It appears that, perhaps because Wu Zeng fell into political disfavour, Casual Records of the Nenggai Studio fell out of print from the Yuan period (1279-1368), if not before. However, Ming period scholars (1368-1644) found texts of the work and it returned to circulation.
The work is included in many old book collections (congshu) and also in the book series on Chinese eating and drinking culture called Zhongguo pengren guji congkan.
Further reading is listed at .