The Yishi jishi 壹是紀始 "Validation of all details from the roots" is a kind of encyclopedia compiled by the Qing period 清 (1644-1911) scholar Wei Song 魏崧. It is 22 juan "scrolls" long, with 1 juan of supplementary data. It is divided into 22 chapters, each chapter corresponding to one juan. The book investigates more than 2,000 different themes of all fields. Because of its shortness and condensed character and the indication of sources for all topics it can be used as a kind of research tool. The headlines of all chapters indicate the beginning of a certain institution or custom.
The Yishi jishi was printed in 1834 by Wei Song himself. There was a reprint in 1888 by the Yongbeiji Studio 甬北寄廬 and another print in 1891 by the Wenkui Studio 文奎堂.
Pan Yinsheng 潘寅生, Guo Jiankui 郭建魁 (1993). Zhonghua shehui kexue gongjushu cidian 中華社會科學工具書辭典, p. 692. Lanzhou: Gansu renmin chubanshe.
Zhao Hankun 趙含坤 (2005). Zhongguo leishu 中國類書, pp. 454-455. Shijiazhuang: Hebei renmin chubanshe.
天文 Tianwen Astronomy|
地形 Dixing Geography
宮室 Gongshi Palaces and buildings
墳墓 Fenmu Tombs and graves
人品稱名 Renmin mingcheng Designations and terms in human relations
試科仕官 Shike shiguan State examinations
職官 Zhiguan State offices
印信圖章 Yinxin tuzhang Printing, corresponding, illustrating and writing
文史 Wenshi Literature and historiography
賦稅 Fushui Taxes
器具 Qiyong Tools and objects
銀錢 Yinqian Silver money and copper cash
神祀 Shensi Sacrifices
樂器 Queqi Musical instruments
兵器 Bingqi Weapons
律法 Lüfa Law
術數嬉戲 Shushu xixi Prognostication and games
衣服 Yifu Clothing
飲食 Yinshi Food and dringking
舟車 Zhouche Ships and carts
禽獸 Qinshou Birds and beasts
俗語 Suyu Vernacular language