Cáo Cāo
Cao Cao (155-220), famous statesman and general at the end of Han, noted poet and calligrapher, later warlord, founder and first king of Cao Wei 曹魏, father of Emperor Cao Pi 曹丕
the main villain of novel the Romance of Three Kingdoms 三國演義|三国演义
shuō Cáo Cāo Cáo Cāo jiù dào
lit. speak of Cao Cao and Cao Cao arrives
fig. speak of the devil and he doth appear