Dude, r u kidding? why don't your Indians just rotate your capital periodically? Or do you see any country with some history periodically changing their Capital? Is there anyone? Absolutely NO, right? As a united gigantic empire with a long long history, the number of cities that were served as the Empire Capital was much less than the number of China Dynasties, and Beijing was one of these cities. Moreover, Beijing was not only an ancient empire capital compared to her peer cities, she has been the capital in the past 800 hundred yrs most of time, and experiencing most of historical moments in the process of China's transformation from traditional to modern society, in which the memory of Beijing has imprinted into ordinary Chinese people's brains. Her spoken language is the base of official modern Chinese language, her icons are almost equal to China icons, such as Tiananmen, Great Wall, Forbidden City...Her education, science, technology, literature, arts, cinema, drama, music....have significant influence on modern China. So when you talk about capital rotation in China, you'd better ask the same question to France, UK, Germany, Italy, Greece...You will probably get the same answer.