Why do some Vietnamese people believe that there is no country called "China" and only refer to dynasties like Qing, Sui, Han, and Tang? Did these dynasties have different names or were they considered separate entities?

 Some Vietnamese people may prefer to refer to historical Chinese dynasties like Qing, Sui, Han, and Tang rather than using the term "China" due to complex historical and cultural reasons. Vietnam has a long and intricate history of interactions with its northern neighbor. Throughout various dynasties, Vietnam experienced both cultural influences and conflicts with China. The choice to emphasize dynasties over the contemporary concept of "China" may be a way for some Vietnamese to distinguish between different periods of history and highlight the distinctiveness of their own culture.

These Chinese dynasties were indeed distinct entities with their own characteristics, rulers, and historical contexts. Each dynasty had its own name, reflecting a particular era of Chinese history. The emphasis on specific dynasties might be a means to acknowledge the historical nuances and changes within China rather than presenting it as a monolithic entity. It is essential to note that Vietnam, despite these historical connections, has maintained a unique identity shaped by its geography, language, and cultural heritage.

Additionally, geopolitical factors and historical conflicts have played a role in shaping Vietnamese perspectives on China. The long history of territorial disputes and invasions has created a complex relationship between the two countries. Some Vietnamese individuals may choose to emphasize dynastic names as a way to emphasize historical periods when interactions were different or to maintain a sense of cultural autonomy in the face of a powerful neighbor. In essence, the preference for dynastic names reflects a nuanced approach to history and a desire to highlight the diversity within China's long and multifaceted historical timeline