According to the survey，Belt and Road Forum for International Cooperation is not only a milestone in moving towards center of world further for China，but also a milestone in growth of national mentality of a great power.For one thing，Chinese people are increasingly evaluating national major affairs and leaders' important activities with historical intelligence from international and global perspective，which shows positive national attitudes and political literacy of a great power；for another，people's mentality and what national leaders do form a good interactive relationship in the face of national major affairs，and state leaders continue to show national strength on the international stage，which subtly makes people's mentality become more rational，mature and confident.