"三國志" by Chen Shou is a Chinese official history written in the late 3rd century CE. It chronicles the fall of the Han dynasty and the Three Kingdoms period, when rival states Cao Wei, Shu Han, and Eastern Wu vied for control of China. Organized as individual biographies across 65 fascicles, this authoritative work documents the political, social, and military events that shaped an era. It later inspired the classic historical novel "Romance of the Three Kingdoms."