Historical reasons for the prosperity of frontier poems in Tang Dynasty

The prosperity of frontier poems in Tang dynasty, especially in the prosperous Tang dynasty, has profound historical reasons. To sum up, there are three reasons: first, the powerful Tang empire provided a solid material foundation for the prosperity of frontier fortress poetry; Secondly, the high spirit of the times in the prosperous Tang Dynasty provided positive social psychology for the prosperity of frontier fortress poems; Thirdly, the overall prosperity of Tang poetry and the long-term development of frontier poems are the internal logical starting point of the prosperity of frontier poems in the prosperous Tang Dynasty.