As far as the poets of the Tang Dynasty themselves are concerned, it is inconvenient for people of this dynasty to describe the affairs of this dynasty. In ancient my country, when writing, contemporary monarchs and respected people were not allowed to be called by their names, but must be addressed in other ways. Therefore, poets used the metonymy technique of stating that the Han Dynasty actually refers to the Tang Dynasty, and used associative techniques that transcend time and space. Create a kind of artistic conception - the Han Dynasty in the poem is imaginary, but the Tang Dynasty outside the poem is real. However, most Tang poetry refers to Han as Tang Dynasty. This is because in Chinese history, although the Qin Dynasty unified China for the first time and established a feudal monarchy, the vigorous development of a unified, multi-ethnic, centralized feudal country This is a situation that only existed in the Han Dynasty. People in the Tang Dynasty believed unambiguously: Regardless of politics, military, economy, and culture, the only previous dynasty that could be compared to the Tang Dynasty was the long-famous Han Dynasty. There is some reason for the conceit of the Tang Dynasty people - although the Han and Tang dynasties were hundreds of years apart, they did have many similarities and were equally famous in the world. Therefore, "Tang followed Han law" was not only a starting point for the rulers of the Tang Dynasty to establish and consolidate their feudal monarchy, but also an important reason why people in the Tang Dynasty often replaced Han with Tang.
?