China of the early 1900s has undergone changes from reform to revolution, from polities to culture, which tended to be the radical developing process. Radical mood has been the base emotion of whole Society between last phase of Qing Dynasty and the initial stage of People's Republic of China, which was built upon dissatisfaction and disappointment to the reality, as well as the subjective expectation that helped transform rapidly in order to change the situation of the time. The mutual agreement that is through the ideological and cultural revolution to resolve the political issues fundamentally, and the dream were effected by thought of the cosmopolitanism trend, of which Obtaining the Western politics and culture identification by simple transplant on culture, provided new hope, brand-new way, and emboldened to break with tradition. Factors leading to radical trend are so many and complex, but the root is the sharp contrast between goal of being powerful country and the weak nation in reality.