The relationship of China and the outside world for nearly a century is full of twists and turns and changes. For the Chinese nation, it's a memory with unforgettable sadness and happiness. As China developed from a semi-feudal, semi-colonial country to an independent socialist country and to a powerful big country in the world, the Western-dominated international system has had a dramatic change in their attitudes towards China, from contempt and exploitation to hostile confrontation and blockade, and to multiple and complex means including both cooperation, dialogue and pressure.