Most of them have their own emphasis, mostly for specific historical events or historical figures, with feelings or feelings; Nostalgic poems are mostly in the past, and they are felt when visiting historical sites.
The definition of epic
Poetry-chanting refers to poetry creation with historical themes as the object of chanting. Poems with historical themes have many names, such as reminiscing about the past, nostalgia for the past, visiting the past, feeling the past, rejuvenating the past, reading history, chanting history and so on. Moreover, some directly focus on historical figures and events that have been sung, and they all have a common feature, that is, they all take history as the carrier of poets' feelings and are closely combined with history and emotion.
So they all belong to the category of generalized epic. If we give a definition of chanting history, then all poems that describe, evaluate, mourn or embrace the rise and fall of the country can be called chanting history.
As early as the pre-Qin period, there were such works in the Book of Songs and Songs of the South, expressing feelings or feelings about specific historical events or historical figures. The first real epic in the history of poetry is Ban Gu's Ode to an Epic in the Eastern Han Dynasty.