Chinese critics from the Song Dynasty referred to Du Fu as the “poet­historian”．Both before and after the An Lushan Revolt，Du Fu witnessed a typical political and social situation；②the common people still lived in poverty while the emperor and his top officials enjoyed a foolishly luxurious life.He composed many poems such as “Three Officials ”and “Three Departures”．His poems expressed his dissatisfaction with the government and his great pity for the common people.Du Fu used his poems to comment on current events and historical images.Du Fu became the historian by creating his responses to particular situations.