Cao Pi (187–226), first emperor of 曹魏cáowèi (r. 220–226) and son of 曹操cáocāo; posthumously known as Emperor Wen of Wei; a renowned poet, calligrapher, and author of the 'Dianlun' who, with his father and brother 曹植cáozhí, is one of the 'Three Caos'