【明報專訊】WITH pomp and circumstance Beijing will play host to a gathering tomorrow to commemorate in a high-profile manner the 40th anniversary of China's Reform and Opening Up. At a time when trade negotiations between China and the US are set to begin, the declaration to be made by Xi Jinping, general secretary of the CPC and president of China, concerning Reform and Opening Up in the future will be the centre of attention from around the world.