The writing system used on turtle shells and animal bones during the Shang dynasty for divination; commonly referred to as [[甲骨文|甲骨文|jia3 gu3 wen2]].

A seminal academic work by scholar Luo Zhenyu, first published in 1914 and revised in 1927, which provides systematic decipherment and research of oracle bone inscriptions from the late Shang dynasty. The book is divided into eight sections covering topics such as the capital, emperors, personal names, geography, characters, divination records, ritual systems, and divination methods.