The Airizhai congchao 愛日齋叢鈔 "Thicket Draft of the Love-the-Sun Studio", also written 愛日齋藂抄, is a biji 筆記 "brush notes" style book written by a late Southern Song period 南宋 (1127-1279) scholar with the family name Ye 葉. His personal name is unknown, and Tao Zongyi's 陶宗儀 collection Shuofu 說郛 is the only source where a family name is mentioned. The book can be dated roughly because the reign motto 咸淳 (1265-1274) of Emperor Duzong 宋度宗 (r. 1264-1274) is mentioned. The book mainly discusses themes of scholarship and quotes vastly from older authors like Zhao Delin 趙德麟, Zhang Zhifang 王直方, Cai Tao 蔡絛, Zhu Yi 朱翌, Hong Mai 洪邁, Ye Mengde 葉夢得, Lu You 陸游, Zhou Bida 周必大, Gong Yizheng 龔頤正, He Wei (He Yuan) 何薳 and Zhao Yanwei 趙彥衛, and provides comments on their writings. The arrangement of the book is similar to Zhang Hao's 張淏 Yungu zaji 雲谷雜記 or Ye Daqing's 葉大慶 Kaogu zhiyi 考古質疑, but the quality of the language does not reach that of these books. At least, the Airizhai congchao must be praised for its critical use of older texts and correction of their errors, like the question of printing, female kowtow, state chariots, court robes, the income of state officials, and much more. Master Ye·s statements about poetry and his analysis and comparison of ancient poems are also quite valuable.
It is unknown when the book was published first, but it seems to have been lost at some point of time, except 143 fragments quoted in the Ming period 明 (1368-1644) encyclopaedia Yongle dadian 永樂大典 and 22 paragraphs in the Shuofu. Twelve of these are identical, so that the edition in the imperial reprint series Siku quanshu 四庫全書 included 153 paragraphs that are arranged in 5 juan "scrolls". The Airizhai congchao is also included in the reprint series Shoushange congshu 守山閣叢書, Congshu jicheng chubian 叢書集成初編 and Tang-Song congshu 唐宋叢書.
Source: Li Xueqin 李學勤, Lü Wenyu 呂文鬰 (1996). Siku da cidian 四庫大辭典, Changchun: Jilin daxue chubanshe, vol. 2, p. 1924.