Ganlu Zishu

Ganlu Zishu (Chinese: 干祿字書; pinyin: Gànlù zìshū; Wade–Giles: Kan4-lu4 tzŭ4-shu1; lit.

'Character Book for Seeking an Official Emolument') is a Chinese orthography dictionary of the Tang dynasty.

It is roughly based on Yan Shigu's work Ziyang (字樣 "Character Samples"), now surviving only in fragments.

It was meant to be an official guide for the use of those who took the Imperial examination, thus the title "Ganlu", an allusion to the Analects (2:18).

The variants of a character are divided into three types: the "standard" (正 zheng), the "acceptable" (通 tong) and the "vulgar" (俗 su).