First of all. China's economic aggregate accounts for 18.5% of the world's economic aggregate, ranking second in the world; The manufacturing scale and foreign exchange reserves rank first in the world; The R&D expenditure of the whole society ranks second in the world, and the total number of R&D personnel ranks first in the world, entering the ranks of innovative countries; More than 140 countries and regions in the world are major trading partners, and the total trade volume of goods ranks first in the world.